THESAURUS
building block
air, atom, atomic particles, atoms, brute matter, chemical element, component, constituent, core, distillate, distillation, earth, element, elementary particle, elementary unit, elixir, essence, fabric, fire, fundamental particle, gist, heart, hyle, hypostasis, kernel, marrow, material, material world, materiality, matter, meat, medium, molecule, monad, natural world, nature, nub, physical world, pith, plenum, quintessence, sap, soul, spirit, stuff, substance, substratum, sum and substance, tangible, the four elements, unit of being, water