be, beech, blond, blonde, cold, daw, dun, fox, grey, hoar, lead, loose, os, pu, pure, roan, rue, sage, scaup, stone, ta, taupe, thread, ti

accent, argent, ash-gray, ash-grey, ashy, ash gray, ash grey, basalt, beard moss, beech tree, blackcap, black moss, bluebill, bluestone, bluetick, blue fox, blue whale, bobtail, brinded, brindle, brindled, broadbill, bushtit, bush tit, cement, charcoal, claustrum, cortex, cushaw, dacite, dowdy, elkhound, fuscous, grampus, gray-haired, grayback, graylag, grayly, gray birch, gray fox, gray jay, gray wolf, grey-haired, greylag, greyly, grey fox, grisaille, grizzled, grizzly, hawk owl, heart-leaf, heartleaf, heron, hoary, house mouse, jackdaw, jack pine, johnny, kit fox, kyanite, light-haired, long moss, maned wolf, mocker, moth plant, mousy, muddied, nimbus, platinum, pochard, podsol, podzol, pompon, rain cloud, rebel, redhead, red wolf, rock dove, sage-green, scaup duck, se, shagbark, shame plant, shellbark, silver, smaltite, sneezewort, sober, squally, stannite, steel gray, stibnite, sunray, tabby, tilia, tin pest, tin plague, touch-me-not, tungsten, turquoise, ugly, unhewn, white-haired, white pine, wizen, wizened, wolfram, wood-rat, wood rat

action plant, andesite, bayberry, beard lichen, black margate, black morel, black squirrel, bladdernose, blue darter, blue pointed, bonduc nut, burmese cat, buttoned-down, camp robber, cerium, chalcocite, chamosite, charcoal-gray, charcoal-grey, charcoal gray, charcoal grey, chickadee, chinchilla, christmas tree, chrysotile, cockateel, cockatiel, codling moth, codlin moth, cooper's hawk, copper glance, corbina, cyanite, dapple-gray, dapple-grey, dappled-gray, dappled-grey, dominick, dominique, dusky shark, dwarf daisy, franciscan, galena, garry oak, germanite, giant reed, golden cup, golgi cell, graniteware, gray-headed, gray friar, gray poplar, great maple, green monkey, grey-headed, greylag goose, hafnium, haphazard, herb of grace, hoariness, hooded seal, house sparrow, hubbard squash, humble plant, iron-gray, iron-grey, iron blue, johnny reb, kittiwake, koala, limber pine, live-and-die, living rock, maltese cat, manganese, miniver, mispickel, mockingbird, moth orchid, mountain pine, native bear, nicker nut, nicker seed, nimbus cloud, old man's beard, olive drab, osmium, oxford-gray, oxford-grey, oxford gray, oxford grey, pallium, podsol soil, podzol soil, poppy seed, prairie fox, protean, psittacus, rock pigeon, rock squirrel, rosemary, sandbar shark, satin bird, scissortail, sea-rocket, sea swallow, silverback, silverfish, silverish, silvery, silver gray, silver grey, silver oak, silver pine, solitaire, spanish moss, sycamore, tabby cat, tantalum, thalamus, thallium, tichodrome, timber wolf, tin disease, tin pyrites, unfathomed, unnerving, vireo, vulpes velox, wall creeper, waxberry, whippoorwill, whisker jack, whitebarked pine, whitebark pine, white willow, yellow birch, zinkenite

abies alba, african gray, amblygonite, anser anser, argyrodite, arundo donax, aythya ferina, bastard ridley, bastard turtle, beryllium, blue mold fungus, bonito shark, buttercup squash, canada jay, candleberry, canis lupus, canis niger, canis rufus, complementary, conic morel, crabeater seal, dark-eyed junco, diceros simus, eastern ground snake, english sparrow, eschrichtiidae, germanium, glucinium, great blue heron, hippocampus, javelina, kangaroo bear, koala bear, living granite, locus niger, love-in-a-mist, mugilidae, mus musculus, niobium, northern parula, norwegian elkhound, oregon grape, oregon oak, parula warbler, plutonium, podsolic soil, progeria, russian olive, salix alba, samarium, saturated, scottish maple, selenium, sensitive plant, sergeant major, silver berry, sneezeweed yarrow, snow-in-summer, sterna hirundo, sulfur bottom, syrian bear, titanium, tulip orchid, urocyon, vulpes macrotis, western kingbird, western white pine, woolly daisy, woolly indris, zirconium

arkansas kingbird, arsenopyrite, atlantic ridley, basal ganglion, blue point siamese, calcium carbide, california sage, carya ovata, cerebral cortex, cerebral mantle, cockatoo parrot, collared peccary, dentate nucleus, elanus leucurus, genus psittacus, genus tilia, grampus griseus, hoary alison, hoary alyssum, huntingdon willow, isurus glaucus, italian cypress, junco hyemalis, lepus townsendi, little blue heron, narrowhead morel, norwich terrier, nucleus niger, ohio buckeye, old english sheepdog, oregon white oak, pinus flexilis, pyrrhuloxia, quercus garryana, red-eyed vireo, resurrection plant, rose of jericho, satin bowerbird, seriphidium, shagbark hickory, shellbark hickory, sodium hydride, stone mimicry plant, substantia nigra, swamp candleberry, tillandsia usneoides, western gray squirrel, whitetail jackrabbit, white rhinoceros, yorkshire terrier

achromatic color, achromatic colour, african green monkey, american gray birch, american hornbeam, antheropeas wallacei, asarum virginicum, avahi laniger, aythya americana, betula leutea, cakile maritima, california sagebrush, carpinus betulus, chinchilla laniger, columba livia, complementary color, corvus monedula, european hornbeam, family mugilidae, florida gallinule, genus urocyon, helvella sulcata, hygrotrama foetens, kerry blue terrier, mimosa pudica, mimus polyglotktos, morchella conica, parula americana, passer domesticus, pinus banksiana, pinus monticola, populus canescens, red-flowered silky oak, ruta graveolens, scissortailed flycatcher, sciurus griseus, sitta canadensis, surnia ulula, tayassu tajacu, usnea barbata, vireo olivaceous

accipiter cooperii, acer pseudoplatanus, achillea ptarmica, ardea herodius, berteroa incana, betula alleghaniensis, caprimulgus vociferus, carcharhinus obscurus, carcharhinus plumbeus, cattleya citrina, cerastium tomentosum, citellus variegatus, clitocybe inornata, cupressus sempervirens, encyclia citrina, european silver fir, family eschrichtiidae, genus seriphidium, grevillea banksii, haldea striatula, lepisma saccharina, limnodromus griseus, mahonia nervosa, menticirrhus undulatus, mexican tulip poppy, morchella angusticeps, muscivora-forficata, myrica pensylvanica, nymphicus hollandicus, peccari angulatus, protoplasmic astrocyte, psittacus erithacus, sitta carolinensis, solitary vireo, subthalamic nucleus, tricholoma pardinum, tyrannus vociferans

balaenoptera musculus, carpocapsa pomonella, ceratotherium simum, cystophora cristata, egretta caerulea, elaeagnus augustifolia, eriophyllum wallacei, grevillela parallela, hygrophorus kauffmanii, lepidochelys kempii, mediterranean cypress, perisoreus canadensis, peronospora tabacina, phascolarctos cinereus, potamophis striatula, silvia atricapilla, tayassu angulatus, ursus arctos syriacus, vireo solitarius

alsophila pometaria, artemisia californica, betula populifolia, hygrophorus caeruleus, podocarpus latifolius, tichodroma muriaria

anastatica hierochuntica, anisotremus surinamensis, gallinula chloropus cachinnans, hygrophorus inocybiformis, ptilonorhynchus violaceus, pyrrhuloxia sinuata, rosmarinus officinalis

cercopithecus aethiops sabaeus, hunnemania fumariifolia, urocyon cinereoargenteus