Modifiers matching rock:

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

Simple categories matching flying:

• bug,
• thing,
• object,
• insect,
• body,
• characteristic,
• pet,
• creature,
• bird,
• animal,
• contraption,
• species,
• vehicle,
• means,
• aircraft,
• unit,
• weather,
• raptor,
• prey,
• hazard,
• substance,
• organism,
• insectivore,
• character,
• arthropod,
• structure,
• fauna,
• debris,
• predator,
• pest,
• sign,
• particle,
• disc,
• waterfowl,
• surface,
• mount,
• mammal,
• training,
• part,
• matter,
• missile,
• event,
• toy,
• activity,
• organization,
• projectile,
• dinosaur,
• fragment,
• beast,
• rock,
• disk,
• serpent,
• vertebrate,
• piece,
• craft,
• fowl,
• device,
• system,
• area,
• track,
• expense,
• reptile,
• giant,
• condition,
• jewel,
• article,
• material,
• machine,
• vessel,
• command,
• moth,
• instrument,
• seabird,