Modifiers matching rock:

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

Simple categories matching hard:

• surface,
• job,
• wall,
• foodstuff,
• material,
• object,
• wood,
• substrate,
• body,
• segment,
• equipment,
• tissue,
• tick,
• institution,
• armor,
• rock,
• fixing,
• piece,
• stone,
• liquor,
• insulator,
• appendage,
• stain,
• skill,
• furnishing,
• veggie,
• oxide,
• drug,
• softwood,
• obstruction,
• original,
• work,
• part,
• conveyance,
• mast,
• papers,
• acceleration,
• elastomer,
• fiber,
• lolly,
• detector,
• coal,
• particulate,
• discipline,
• shell,
• brush,
• board,
• feature,
• rule,
• evidence,
• hydrocarbon,
• reference,
• yarn,
• output,
• clay,
• sector,
• rubber,
• mask,
• grit,
• animal,
• toy,
• abrasive,
• landscaping,
• layer,
• essence,
• study,
• matrix,
• use,
• measure,
• hat,
• contaminant,
• wire,
• cheese,
• belt,
• form,
• ferrite,
• power,
• monomer,
• service,
• tag,
• helmet,
• sport,
• access,
• resin,
• alloy,
• crystal,
• flooring,
• thing,
• structure,
• candy,
• implement,
• thermoplastic,
• format,
• armour,
• ip,
• bottom,
• variable,
• quartz,
• connection,
• bait,
• assets,
• narcotic,
• input,
• ground,
• pad,
• fruit,
• wax,
• workout,
• water,
• fish,
• ball,
• panel,
• incentive,
• issue,
• hardwood,
• matter,
• sheet,
• data,
• drink,
• sausage,
• labour,
• time,
• wealth,
• vegetable,
• coating,
• case,
• fabric,
• grain,
• unit,
• attribute,
• track,
• meat,
• starches,
• drive,
• booze,
• pen,
• spice,
• apple,
• infrastructure,
• edge,
• boundary,
• info,
• adhesive,
• engineering,
• point,
• steel,
• nut,
• problem,
• plastic,
• disk,
• appliance,
• alcohol,
• veg,
• notebook,
• residue,
• target,
• straw,
• sweet,
• subject,
• projectile,
• crime,
• fuel,
• defence,
• science,
• block,
• food,
• laser,
• investment,
• outcome,
• identification,
• paper,
• failure,
• weapon,
• room,
• activity,
• device,
• place,
• epithelium,
• feed,
• bone,
• medication,
• scale,
• chemical,
• ware,
• seed,
• tree,
• gemstone,
• technology,
• insect,
• base,
• powder,
• system,
• grass,
• pavement,
• possession,
• language,
• carbon,
• choice,
• ingredient,
• area,
• coral,
• dog,
• beverage,
• training,
• glass,
• protein,
• devices,
• tool,
• bronze,
• confectionery,
• backing,
• constituent,
• information,
• article,
• content,
• constraint,
• commodity,
• characteristic,
• rind,
• barrier,
• washer,
• instrument,
• indicator,
• waste,
• utensil,
• metal,
• spirits,
• deposit,
• exercise,
• needle,
• substance,
• times,
• fact,
• control,
• soil,
• impediment,
• instrumentality,
• artifact,
• key,
• aggregate,
• medium,
• nonmetal,
• professional,
• fibre,
• floor,
• furniture,
• wheat,
• bones,
• particle,
• region,
• disease,
• fault,
• formation,
• condition,
• beads,
• button,
• maple,
• space,
• biscuit,
• fat,
• item,
• ore,
• mineral,
• acid,
• cover,
• container,
• pine,
• fastener,
• lure,
• labor,
• compound,
• procedure,
• disturbance,
• ligand,
• cracker,
• fastening,
• lump,
• organism,
• profession,
• ion,
• capital,
• product,
• bottle,
• packing,
• law,
• solid,
• component,
• gem,
• plate,
• scientist,
• works,
• mode,
• wedge,
• vehicle,
• commitment,
• stuff,
• prey,
• filler,
• butter,
• film,
• pipe,
• copy,
• knowledge,
• benefit,
• aspect,
• portion,
• event,