Rabelaisianism, X-rated movie, air pollution, algae, alluvion, alluvium, ash, ashes, attritus, autophyte, bawdiness, bawdry, bean, bedarken, bedaub, besmear, besmirch, besmutch, besoil, bestain, black, blacken, blackening, blackwash, blast, blight, bloodstain, blot, blotch, blue movie, blur, bracken, bran, brand, brown algae, calx, cancer, canker, carbon, carrion, charcoal, cinder, climber, clinker, coal, coke, conferva, confervoid, coom, cork, corruption, cosmic dust, creeper, crow, crumb, crumble, dab, dandruff, darken, darkening, daub, decay, defile, denigrate, denigration, deposition, deposits, diatom, diluvium, dinge, dirt, dirtiness, dirty, dirty movie, discolor, draff, dregs, dross, dry rot, dust, dust ball, ebon, ebonize, ebony, efflorescence, ember, erotic art, erotic literature, erotographomania, excrement, eyesore, fallout, farina, feces, fern, fescenninity, filings, filth, filthiness, fleck, flick, flour, flyspeck, foul matter, foulness, froth, fruits and vegetables, fucus, fume, fungus, furfur, gangrene, grapevine, green algae, grime, grits, groats, grounds, gulfweed, herb, heterophyte, iconolagny, ink, ivy, jet, kelp, kittens, lava, lees, legume, lentil, lewdness, liana, lichen, lint, liverwort, loess, macula, maculation, macule, mark, meal, melanization, melanize, mess, mildew, mold, moraine, moss, moth, moth and rust, muck, mucus, mud, murk, mushroom, must, nastiness, night, nigrification, nigrify, obscenity, offensiveness, offscum, ordure, oversmoke, parasite, parasitic plant, patch, pea, perthophyte, pest, phytoplankton, pitch, planktonic algae, plant families, pornographic art, pornographic literature, pornographomania, pornography, powder, precipitate, precipitation, puffball, pulse, pus, pussies, putrid matter, raspings, raven, red algae, reek, ribaldry, rockweed, rot, rust, salaciousness, salacity, saprophyte, sargasso, sargassum, sawdust, scoria, scum, scurf, scurrility, scuz, sea lentil, sea moss, sea wrack, seaweed, sediment, settlings, sexploitation, shade, shading, shadow, silt, sinter, skin flick, slag, slime, sloe, slubber, smear, smirch, smirching, smoke, smouch, smudge, smudging, smutch, smutching, smuttiness, snot, soft-core pornography, soil, soilage, soilure, soot, sordes, spatter, speck, speckle, splash, splatter, splotch, spot, stag film, stain, stigma, sublimate, succulent, sullage, sully, taint, tar, tarnish, toadstool, vetch, vileness, vine, worm, wort, wrack