What's the difference between cavern and underground?

Cavern


Definition:

  • (n.) A large, deep, hollow place in the earth; a large cave.

Example Sentences:

  • (1) The horizontal portion of the intracavernous ICA as well as the whole aspect of the aneurysm could be exposed as a result of the extended opening of the cavernous roof anterior to the posterior clinoid process.
  • (2) This lesion was almost completely removed and was diagnosed as cavernous hemangioma.
  • (3) The authors discuss the problems of emergency treatment of cavernous hemangiomas of the liver.
  • (4) Direct visualization of the intercavernous sinuses on contrast-enhanced MR images may serve as an ancillary sign for the diagnosis of carotid-cavernous or carotid-dural fistulas near the sella.
  • (5) Direct surgical exposure of the cervical or cavernous internal carotid artery (ICA) was necessary in the remaining 3 patients, who had undergone unsuccessful surgical trapping.
  • (6) Other angiographic procedures also revealed marked hepatopetal collaterals (cavernous transformation) entering the liver through the hilum.
  • (7) The cavernous sinus is often involved pathologically, which can cause ocular motor nerve palsies with or without facial sensory disturbances.
  • (8) On the basis of previous reports, in which specific measurements of the cavernous portions of the internal carotid arteries are given, the authors believe that this case is unique.
  • (9) Neither adventitia nor nerve fibers were found in the cavernous hemangioma.
  • (10) Pharmaco-Doppler sonography includes the evaluation of blood-flow velocities within the dorsal and deep cavernous arteries of the penis before and after intracavernous application of a vasoactive drug.
  • (11) Cavernous hemangiomas of the brain stem are usually discovered accidentally during evacuation of a hematoma, and successful surgical treatment of these lesions is seldom achieved.
  • (12) In the first case, a great number of cavernous blood vessels has been found and this, according to the authors, may support the idea that the tumour aroses within the benign hemangioma.
  • (13) This appearance, similar in all respects to that seen with cavernous hemangioma of liver, is rarely reported in the literature.
  • (14) We studied a family in which the proband had an acute chiasmal syndrome secondary to a cavernous angioma of the optic nerve and chiasm.
  • (15) Eleven of 15 patients had middle cranial fossa involvement; cavernous sinus extension was observed in six patients.
  • (16) Based on findings for 30 patients, the authors assess the value of CT scans for the diagnosis of cavernous hemangiomas of the liver.
  • (17) Stenosis of cavernous portion of internal carotid artery due to tumoral involvement was also noted.
  • (18) The case is reported of a giant intracranial internal carotid artery aneurysm associated with a carotid-cavernous fistula following a closed head injury.
  • (19) The cavernous studio will play host to a half-sized football pitch, where pundits will demonstrate what players did or didn't do correctly and there are other technological innovations planned that marry broadband interactivity with live coverage.
  • (20) A case of thrombasthenia (Glanzmann) associated with an intracerebral cavernous angioma in a 32-year-old woman is reported.

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.