What's the difference between ground and underground?

Ground


Definition:

  • (imp. & p. p.) of Grind
  • (n.) The surface of the earth; the outer crust of the globe, or some indefinite portion of it.
  • (n.) A floor or pavement supposed to rest upon the earth.
  • (n.) Any definite portion of the earth's surface; region; territory; country. Hence: A territory appropriated to, or resorted to, for a particular purpose; the field or place of action; as, a hunting or fishing ground; a play ground.
  • (n.) Land; estate; possession; field; esp. (pl.), the gardens, lawns, fields, etc., belonging to a homestead; as, the grounds of the estate are well kept.
  • (n.) The basis on which anything rests; foundation. Hence: The foundation of knowledge, belief, or conviction; a premise, reason, or datum; ultimate or first principle; cause of existence or occurrence; originating force or agency; as, the ground of my hope.
  • (n.) That surface upon which the figures of a composition are set, and which relieves them by its plainness, being either of one tint or of tints but slightly contrasted with one another; as, crimson Bowers on a white ground.
  • (n.) In sculpture, a flat surface upon which figures are raised in relief.
  • (n.) In point lace, the net of small meshes upon which the embroidered pattern is applied; as, Brussels ground. See Brussels lace, under Brussels.
  • (n.) A gummy composition spread over the surface of a metal to be etched, to prevent the acid from eating except where an opening is made by the needle.
  • (n.) One of the pieces of wood, flush with the plastering, to which moldings, etc., are attached; -- usually in the plural.
  • (n.) A composition in which the bass, consisting of a few bars of independent notes, is continually repeated to a varying melody.
  • (n.) The tune on which descants are raised; the plain song.
  • (n.) A conducting connection with the earth, whereby the earth is made part of an electrical circuit.
  • (n.) Sediment at the bottom of liquors or liquids; dregs; lees; feces; as, coffee grounds.
  • (n.) The pit of a theater.
  • (v. t.) To lay, set, or run, on the ground.
  • (v. t.) To found; to fix or set, as on a foundation, reason, or principle; to furnish a ground for; to fix firmly.
  • (v. t.) To instruct in elements or first principles.
  • (v. t.) To connect with the ground so as to make the earth a part of an electrical circuit.
  • (v. t.) To cover with a ground, as a copper plate for etching (see Ground, n., 5); or as paper or other materials with a uniform tint as a preparation for ornament.
  • (v. i.) To run aground; to strike the bottom and remain fixed; as, the ship grounded on the bar.
  • () imp. & p. p. of Grind.

Example Sentences:

  • (1) Hoursoglou thinks a shortage of skilled people with a good grounding in core subjects such as maths and science is a potential problem for all manufacturers.
  • (2) The manufacturers, British Aerospace describe it as a "single-seat, radar equipped, lightweight, multi-role combat aircraft, providing comprehensive air defence and ground attack capability".
  • (3) The hospital whose A&E unit has been threatened with closure on safety grounds has admitted that four patients died after errors by staff in the emergency department and other areas.
  • (4) Keep it in the ground campaign Though they draw on completely different archives, leaked documents, and interviews with ex-employees, they reach the same damning conclusion: Exxon knew all that there was to know about climate change decades ago, and instead of alerting the rest of us denied the science and obstructed the politics of global warming.
  • (5) For this to work, its leaders had to be able to at least influence the behaviour and tactics of the militant operators on the ground.
  • (6) One thousand nineteen Wyoming ground squirrels (Spermophilus elegans elegans) from 4 populations in southern Wyoming were examined for intestinal parasites.
  • (7) Unlike most birds of prey, which are territorial and fight each other over nesting and hunting grounds, the hen harrier nests close to other harriers.
  • (8) I had loan sharks turning up at the training ground when I was at Ipswich [2011-13].
  • (9) This week, Umande broke ground on the first of a series of toilet block biocentres in a slum in Kisumu, near Lake Victoria.
  • (10) But in a setback to the UK, Somaliland, which broke away from Somalia in 1991, refused British entreaties to attend on the grounds that it would not have been treated as equal to the Somali government.
  • (11) On land, the pits' stagnant pools of water become breeding grounds for dengue fever and malaria.
  • (12) We conclude that the concept of the limbic system cannot be accepted on empirical grounds.
  • (13) On the grounds of the reported paediatric cases, the erudition in childhood is compared with the more common form in the adult, and is found to be much less linked with diabetes mellitus and to have a far better prognosis, with practically no mortality.
  • (14) It seems like an awfully long way from the ground.” He added: “When I was younger, I dreamed of being an astronaut, but I also wanted to be a policeman or a firebreather.
  • (15) We come to see that some traditions keep us grounded, but that, in our modern world, other traditions set us back.” Female genital mutilation (FGM) affects more than 130 million girls and women around the world.
  • (16) Differentiation on histopathological grounds between this tumour and the more common juvenile melanoma may be difficult, but this important distinction should be possible in almost all cases.
  • (17) For Burroughs, who had been publishing ground-breaking books for 20 years without much appreciable financial return, it was association with fame and the music industry, as well as the possible benefits: a wider readership, film hook-ups and more money.
  • (18) United and West Ham are on similar runs and can feel pretty happy about themselves but are not as confident away from home as they are at home and that will have to change if they are to make ground on the top teams.
  • (19) But today, Americans increasingly no longer shy away from saying they oppose mosques on the grounds that Muslims are a threat or different.
  • (20) One of the reasons for doing this study is to give a voice to women trapped in this epidemic,” said Dr Catherine Aiken, academic clinical lecturer in the department of obstetrics and gynaecology of the University of Cambridge, “and to bring to light that with all the virology, the vaccination and containment strategy and all the great things that people are doing, there is no voice for those women on the ground.” In a supplement to the study, the researchers have published some of the emails to Women on Web which reveal their fears.

Underground


Definition:

  • (n.) The place or space beneath the surface of the ground; subterranean space.
  • (a.) Being below the surface of the ground; as, an underground story or apartment.
  • (a.) Done or occurring out of sight; secret.
  • (adv.) Beneath the surface of the earth.

Example Sentences:

  • (1) He had links to networks including the Hammerskin Nation and was involved in an underground music scene often referred to as "white power music" or "hate rock".
  • (2) Three strains of fluorescent pseudomonads (IS-1, IS-2, and IS-3) isolated from potato underground stems with roots showed in vitro antibiosis against 30 strains of the ring rot bacterium Clavibacter michiganensis subsp.
  • (3) While circulating the quarries is illegal – you risk a fine of up to €60 – neither the IGC nor the police seem to mind the veteran cataphiles who possess a good knowledge of the underground space, and who respect their heritage.
  • (4) The logistics of maintaining and supplying underground clinics located in war-torn rural Afghanistan are presented.
  • (5) German intelligence services had also been keeping tabs on the rightwing radical scene that Zschäpe was a part of, but had lost track of her, along with Mundlos and Böhnhardt when they went underground.
  • (6) In the still active mine workers, dynamic spirometry results showed no difference between smokers or nonsmokers or between underground and surface workers.
  • (7) That said, Turin’s creative scene is quite underground, so you have to seek out the best work.
  • (8) During the non-heating months of June, July and August of 1974, the total and respirable dust content at an underground station of the Newark City Subway System was determined.
  • (9) Part of the initial work has involved London Underground strengthening the structure of Temple tube station by the Thames so the north end of the bridge could sit on top of it.
  • (10) This may serve evidence for the absence of a common morphofunctional underground for this process.
  • (11) The adaptive value of sound signal characteristics for transmission in the underground tunnel ecotope was tested using tunnels of the solitary territorial subterranean mole rats.
  • (12) Excess risks of lung cancer were found in both underground workers (SMR 3.41; 95% CI 1.10-7.97; based on 5 deaths) and surface workers (SMR 1.87, 95% CI 1.18-2.81; based on 23 deaths).
  • (13) Chest X-ray and sputum cytology were used to detect lung cancer among subjects with an underground work history over 10 years and over 40 years of age.
  • (14) Anyone studying the question with an open mind will almost certainly come to a similar conclusion: if we and our children are to have a reasonable chance of living stable and secure lives 30 or so years from now, according to one recent study 80% of the known coal reserves will have to stay underground , along with half the gas and a third of the oil reserves.
  • (15) His initial exposure to leftist ideas was via the underground hippy press which provided him "with a certain amount of scepticism".
  • (16) For example, if the risk estimates from underground miners' studies are, in truth, not applicable to home exposures and overestimate the gradient of risk from home exposure to radon by, for example, a factor of 2, then enormously large numbers of subjects would be required to detect the difference.
  • (17) He hadn't seen his children very much even before he went to prison because he was always busy running around, hiding underground.
  • (18) Transport for London said a planned tube drivers' strike on the London Underground service on Boxing Day is unlikely to cause serious extra disruption should it go ahead, although works are planned on many lines.
  • (19) During Nicolas Sarkozy's unsuccessful 2012 re-election campaign she was mocked for not knowing the price of an underground train ticket (she said €4 instead of €1.70).
  • (20) It was concluded that the study did not provide support for the hypothesis that underground coalmining increases the risk of gastric cancer.