What's the difference between foam and scum?

Foam


Definition:

  • (n.) The white substance, consisting of an aggregation of bubbles, which is formed on the surface of liquids, or in the mouth of an animal, by violent agitation or fermentation; froth; spume; scum; as, the foam of the sea.
  • (n.) To gather foam; to froth; as, the billows foam.
  • (n.) To form foam, or become filled with foam; -- said of a steam boiler when the water is unduly agitated and frothy, as because of chemical action.
  • (v.t.) To cause to foam; as,to foam the goblet; also (with out), to throw out with rage or violence, as foam.

Example Sentences:

  • (1) We similarly evaluated the ability of other phospholipids to form stable foam at various concentrations and ethanol volume fractions and found: bovine brain sphingomyelin greater than dipalmitoyl 3-sn-phosphatidylcholine greater than egg sphingomyelin greater than egg lecithin greater than phosphatidylglycerol.
  • (2) Attach self-adhesive foam strips, or metal strips with brushes or wipers attached, to window, door and loft-hatch frames (if you have sash windows, it's better to ask a professional to do it).
  • (3) Lower density foams can be used only if the impact test standards are rewritten with less emphasis on impacts with convex and pointed objects.
  • (4) Focus in this discussion is on the following: 1) female sterilization -- laparotomy, minilaparotomy, and colpotomy; endoscopic sterilization techniques; transcervical approaches to female sterilization; systemic nonsurgical female sterilization; and reversible techniques of female sterilization; 2) abortion -- pregnancy testing, long-term effects; and 3) systemic contraceptives -- steroidal contraception; locally active methods; vaginal foams, creams, and jellies; the diaphragm and other intravaginal barriers; IUDs; and periodic abstine nce.
  • (5) Immunoreactivity in fatty streaks was located around collections of foam cells.
  • (6) Bloody odd combination but those Orange Foam Headphones would blast those magnificent records into my developing brain over and over again" chernypyos – Björk's Human Behavior and Sinead O'Connor's Fire On Babylon: "bjork's 'human behavior' and sinead o'connor's "fire on babylon" oddly stick in my head from that one evening walking in the woods, breathing the damp air, and feeling pleasantly invisible" Pyromancer – REM – Automatic for the People Blood Sugar Sex Magic Pearl Jam - Vs RATM's first album Portishead Maxinquaye by Tricky Manic Street Preachers – Gold Against the Soul Smashing Pumpkins, Siamese Dream "I used to go to the local library and take out a CD (50p for 3 weeks!
  • (7) In contrast, a strong connection was established between the wound base and the covering material when using the three foam substances Coldex, Epigard and SYSpur-derm, through the formation of granulation tissue.
  • (8) Our results confirm that in human atherosclerotic plaques the majority of the foam cells are obviously macrophage-derived, which emphasizes the important role of macrophages in the morphogenesis of these lesions.
  • (9) A suspension of 0.6 mg polyvinyl alcohol foam powder per milliliter of normal saline was found to be optimum.
  • (10) In 1961 contraceptive aerosol foam was introduced and has become widely used.
  • (11) The fine structure of four glioblastomas and two cerebellar astrocytomas maintained in organ culture systems up to 137 days and 43 days, respectively, using either a three-dimensional sponge foam matrix technic or a Millipore filter platform technic, is described and compared.
  • (12) The three xanthomas from two FH homozygotes exhibited marked lipid accumulation in histiocytic foam cells but no lipid deposits in the endothelium of blood vessels in the lesions.
  • (13) After curing of the cement in a environment of 37 degrees C the resulting cement rod was released from the cylinder and the diameter of the rod was measured at 37 degrees C. The influence of the "foaming effect" on the transverse dimensions of the rods was studied by curing the cement at 37 degrees C and 2 atm air pressure in a high-pressure-vessel.
  • (14) This soft body armour was applied, either in direct contact with the thoracic wall of the animals, or with different plastic foam sheets, so-called trauma packs, between the armour and the skin.
  • (15) The foam-cell forming macrophage and its response to modified lipoproteins is considered a key step in the development of atherosclerosis.
  • (16) Implantation of saline in Gel-foam resulted in the same morphology as in hemisected animals except for increased lesion size due to mechanical factors and decreased cicatrix density during the first 30 DPO.
  • (17) But the highlight, of course, was when One Direction ran off stage and my youngest touched Zane with a giant foam hand that I purchased for an extortionate price.
  • (18) To test this hypothesis and to explore how the pleural pressure gradient might affect inhomogeneity of alveolar pressures, we deflated at submaximal flows excised canine lobes that first were suspended in air and then were immersed in foams that simulated the vertical gradient of pleural pressure.
  • (19) These data illustrate that LDL receptor-mediated endocytosis of fused LDL particles can lead to foam cell formation in cultured macrophages.
  • (20) In the granulomatous zone lymphocytes, plasma cells, macrophages, Russel bodies, foam cells, neutrophil leukocytes were found.

Scum


Definition:

  • (v.) The extraneous matter or impurities which rise to the surface of liquids in boiling or fermentation, or which form on the surface by other means; also, the scoria of metals in a molten state; dross.
  • (v.) refuse; recrement; anything vile or worthless.
  • (v. t.) To take the scum from; to clear off the impure matter from the surface of; to skim.
  • (v. t.) To sweep or range over the surface of.
  • (v. i.) To form a scum; to become covered with scum. Also used figuratively.

Example Sentences:

  • (1) There, they learn that African Americans are the scum of the earth - then they are sent here.'
  • (2) The future is defined by the same old atavistic carnage as ever – which is, as Rosenbaum says, “an ingenious form of doublethink echoed in the very premise of a fantasy of the future beginning with “A long time ago in a galaxy far, far away ...” Star Wars cast feel the Force after watching new trailer Read more I don’t hate Star Wars – I love the puppetry, just for starters, and all those beautifully dirty, scum-caked robots.
  • (3) I mean, these people have been described as evil, as scum of the earth, and if we’re paying them, bribing them, to turn back the boats, I mean that’s almost a crime.” Abbott: “Well Neil, the important thing is to stop the boats, that’s the important thing, and I think the Australian people are extremely pleased that that’s what happened.
  • (4) Though waterbirds, including moorhens and gulls, live on the margins, and a thin scum of litter is visible at the shore, the reservoir is not intended as a home to wildlife, and any fish living here are accidental visitors.
  • (5) Anyone who doubts or questions … will be relentlessly pursued by denouncers – “disgusting” is a modest term to describe this scum.
  • (6) Other Greeks with similar experiences said the far-rightists, catapulted into parliament on a ticket of tackling "immigrant scum" were simply doing the job of a defunct state that had left a growing number feeling overwhelmed by a "sense of powerlessness".
  • (7) The debate was interrupted after 20 minutes when about 30 student demonstrators walked into the hall and began to barrack Hunt, chanting "Minister of culture, Tory vulture" and "Tory scum".
  • (8) She was in my face saying, ‘You’re scum, you’re scum.’” That’s not accepted by Jordan.
  • (9) Liz Kendall, the former leadership contender, received a tweet calling for “a final solution to purge Blairite scum” like her from the party.
  • (10) The chants so far are the same as those at Millbank, and cries of "Tory scum" echo around the campus.
  • (11) When asked about Eddie Obeid's comments directed at her over the years, which included the allegations she had been " mixing with scum for so long that she no longer knows who is good and who is bad , what is real and what is made up," she said " It's not very nice, is it? "
  • (12) In the opening round of the tournament he shouted “dirty scum” during the third set of a comfortable victory over Diego Schwartzman.
  • (13) Half the class believed they represented “elitist scum”, but other prisoners defended their purpose, saying although they couldn’t attend one themselves, they now put their own children through private education.
  • (14) Liz Kendall, the former leadership contender, who is still undecided, received a tweet calling for “a final solution to purge Blairite scum” like her from the party.
  • (15) There were accusations of sexism when he gave a female candidate on The Apprentice the third degree about how she intended to organise her childcare and he prompted more outrage with an attack on professional footballers, which he described as "he biggest scum that walk on this planet".
  • (16) I will do everything it takes until we win full victory to free Ukraine from this scum, from this corrupt dirt which is capitalising on the blood of our soldiers and the victims of Maidan, and which has betrayed the ideas of the Ukrainian revolution,” said Saakashvili.
  • (17) Richard Davenport-Hines in his recently published An English Affair: Sex, Class and Power in the Age of Profumo writes that 1963 was the year when "the soapy scum flowed after the sluices of self-righteous scurrility were opened".
  • (18) We were just scared.” Witness reports describe protesters throwing snowballs at the bus and shouting “Let’s see what kind of vermin will get off here” and “asylum scum”.
  • (19) I'm just an ordinary person, I'm not scum, I'm not a thief or a junkie, but when you are desperate you end up resorting to desperate means.
  • (20) I salute them for that.” Class War, originally an eponymous newspaper as well as a movement, somewhat fizzled out during the 1990s but has been recently revived, standing six candidates in this year’s general election under the slogan: “Because all the other candidates are scum.” Class War is organising a protest this Sunday at a museum originally billed as celebrating the role of women in London but which ended up focusing on the crimes of Jack the Ripper .