Modifiers matching rock:

• hard,
• hardest,
• sedimentary,
• precious,
• fragile,
• uniform,
• glassy,
• igneous,
• colored,
• unstable,
• opaque,
• metamorphic,
• coloured,
• volcanic,
• dry,
• coarse,
• new,
• acid,
• native,
• crystalline,
• reactive,
• intermediate,
• rich,
• dense,
• lighter,
• good,
• acidic,
• weak,
• extrusive,
• porous,
• insoluble,
• soft,
• crustal,
• rough,
• industrial,
• intrusive,
• argillaceous,
• ingenious,
• red,
• crumbly,
• extraterrestrial,
• common,
• non-porous,
• local,
• stronger,
• sedentary,
• heated,
• available,
• vitreous,
• spherical,
• terrestrial,
• inert,
• rigid,
• firm,
• refractive,
• weaker,
• original,
• abundant,
• permeable,
• abrasive,
• calcareous,
• powdered,
• colorful,
• ordinary,
• enough,
• smooth,
• dark,
• related,
• friable,
• russian,
• nonporous,
• marine,
• frozen,
• carbonaceous,
• geologic,
• subsurface,
• siliceous,
• artificial,
• textured,
• looking,
• softer,
• organic,
• plutonic,
• covered,
• reflective,
• magnetic,
• metallic,
• consolidated,
• korean,
• widespread,
• dated,
• bituminous,
• isolated,
• hot,
• azonic,
• normal,
• egyptian,
• solid,
• free,
• white,
• crushed,
• angular,
• tight,
• salt,
• older,
• combustible,
• aluminous,
• suitable,
• heavier,
• basic,
• geological,
• fragmented,
• visible,
• flinty,
• impermeable,
• base,
• traditional,
• heavy,
• natural,
• british,
• noble,
• unusual,
• fine,
• useful,
• sticky,
• ductile,
• exotic,
• polycrystalline,
• primary,
• durable,
• deleterious,
• conductive,
• massive,
• flying,
• smaller,
• light,
• polished,
• clastic,
• compact,
• underlying,
• pulverized,
• barren,
• molten,
• heterogeneous,
• tough,
• simple,
• planetary,
• modern,
• polyphase,
• inappropriate,
• stable,
• indigenous,
• strong,
• loose,
• eruptive,
• anisotropic,
• refractory,
• resistant,
• homogeneous,
• small,
• size,
• impervious,
• sharp,
• elastic,
• flat,
• competent,
• chemical,
• brittle,
• typical,
• impenetrable,
• difficult,
• unconsolidated,
• decorative,
• soluble,
• lightweight,
• surrounding,
• large,
• virgin,
• granular,
• ornamental,
• harder,
• alkaline,

Simple categories matching soluble:

• substance,
• material,
• hydroxide,
• medium,
• particle,
• compound,
• oligosaccharide,
• sulphide,
• fuel,
• hormone,
• sugar,
• molecule,
• salt,
• solvent,
• pollutant,
• carbohydrate,
• lubricant,
• beverage,
• component,
• agent,
• metal,
• nutrient,
• toxin,
• entity,
• size,
• carbonyl,
• dirt,
• fiber,
• contaminant,
• solute,
• portion,
• monomer,
• drug,
• rock,
• hydrocarbon,
• derivative,
• oxide,
• residue,
• saccharide,
• alkaloid,
• starch,
• starches,
• system,
• nickel,
• hydrocolloid,
• substrate,
• salicylate,
• gum,
• enzyme,
• nitrate,
• mineral,
• fertiliser,
• vitamin,
• stabilizer,
• waste,
• sulfate,
• chloride,
• powder,
• fluid,
• impurity,
• part,
• receptor,
• atom,
• sulphate,
• alkane,
• filler,
• carrier,
• chemical,
• oil,
• fluoride,
• antigen,
• electrode,
• amine,
• phenol,
• fibre,
• pesticide,
• polymer,
• sweetener,
• liquid,
• precursor,
• antioxidant,
• concentration,
• surfactant,
• constituent,
• food,
• polysaccharide,
• coagulant,
• gas,
• element,
• item,
• catalyst,
• volatile,
• protein,
• stain,
• matter,
• adhesive,
• group,
• metabolite,
• solid,
• formulation,
• macromolecule,
• soil,
• alcohol,
• fertilizer,
• tracer,
• fraction,
• resin,
• deposit,
• preparation,