THESAURUS
pebble
ace, asphalt, atom, bit, blacktop, carpet, causeway, cement, checkstone, cobblestone, concrete, dab, dole, dot, drakestone, dram, dribble, driblet, dwarf, farthing, fingerstone, flag, fleck, floor, flyspeck, fragment, gobbet, grain, granule, gravelstone, groat, hair, handful, iota, jackstone, jot, little, little bit, metal, minim, minimum, minutiae, mite, modicum, molecule, mote, nutshell, ounce, particle, pave, pebblestone, pinch, pittance, point, scruple, slingstone, smidgen, smitch, speck, spoonful, spot, tar, thimbleful, tiny bit, tittle, trifling amount, trivia, whit
ROGET THESAURUS
pebble
Littleness
N
littleness, smallness, exiguity, inextension, parvitude, parvity, duodecimo, Elzevir edition, epitome, microcosm, rudiment, vanishing point, thinness, dwarf, pygmy, pigmy, Liliputian, chit, pigwidgeon, urchin, elf, atomy, dandiprat, doll, puppet, Tom Thumb, Hop-o'-my-thumb, manikin, mannikin, homunculus, dapperling, cock-sparrow, animalcule, monad, mite, insect, emmet, fly, midge, gnat, shrimp, minnow, worm, maggot, entozoon, bacteria, infusoria, microzoa, phytozoaria, microbe, grub, tit, tomtit, runt, mouse, small fry, millet seed, mustard seed, barleycorn,
pebble, grain of sand, molehill, button, bubble, point, atom, fragment, powder, point of a pin, mathematical point, minutiae, micrometer, vernier, scale, microphotography, photomicrography, micrography, photomicrograph, microphotograph, microscopy, microscope (optical instruments), little, small, minute, diminutive, microscopic, microzoal, inconsiderable, exiguous, puny, tiny, wee, petty, minikin, miniature, pygmy, pigmy, elfin, undersized, dwarf, dwarfed, dwarfish, spare, stunted, limited, cramp, cramped, pollard, Liliputian, dapper, pocket, portative, portable, duodecimo, dumpy, squat, short, impalpable, intangible, evanescent, imperceptible, invisible, inappreciable, insignificant, inconsiderable, trivial, infinitesimal, homoeopathic, atomic, subatomic, corpuscular, molecular, rudimentary, rudimental, embryonic, vestigial, weazen, scant, scraggy, scrubby, thin, granular, shrunk, brevipennate, in a small compass, in a nutshell, on a small scale, minutely, microscopically.
Hardness
N
hardness, rigidity, renitence, renitency, inflexibility, temper, callosity, durity, induration, petrifaction, lapidification, lapidescence, vitrification, ossification, crystallization, stone,
pebble, flint, marble, rock, fossil, crag, crystal, quartz, granite, adamant, bone, cartilage, hardware, heart of oak, block, board, deal board, iron, steel, cast iron, decarbonized iron, wrought iron, nail, brick, concrete, cement, hard, rigid, stubborn, stiff, firm, starch, starched, stark, unbending, unlimber, unyielding, inflexible, tense, indurate, indurated, gritty, proof, adamant, adamantine, adamantean, concrete, stony, granitic, calculous, lithic, vitreous, horny, corneous, bony, osseous, ossific, cartilaginous, hard as a rock, stiff as buckram, stiff as a poker, stiff as starch, stiff as as board.