SECTION II. INORGANIC MATTER
Solid Matter, continued
Hardness –N. rigidity, renitence, inflexibility, temper, callosity, durity. induration, petrification; lapidification, crystallization. vitrification, ossification, cornification; stone, pebble, flint, marble, rock, fossil, crag, crystal, quartz, granite, adamant; bone, cartilage; heart of oak, block, board; iron, steel; cast iron, wrought iron; nail; brick, concrete; cement.
Softness –N. pliableness; flexibility; pliancy; sequacity, malleability; flabbiness; ductility, tractility; extendibility, extensibility; plasticity; inelasticity, flaccidity, laxity, clay, wax, butter, dough, pudding; cushion, pillow, feather-bed, pad, down, padding, wadding. mollification; softening.
Thesaurus of Words and Phrases by Peter Mark Roget, M.D., F.R.S. Enlarged by John Lewis Roget, M.A., New Edition Revised and Enlarged by Samuel Romily Roget, M.A. Published by Grosset & Dunlap, the edition is copyright 1941, 1947.