Category Nuances matching precursor:

• chemical,
• genetic,
• inorganic,
• key,
• synthetic,
• acid,
• metal,
• explosive,
• common,
• natural,
• gaseous,
• exogenous,
• simple,
• carbonaceous,
• elemental,
• dietary,
• salt,
• biodegradable,
• conventional,
• liquid,
• volatile,
• polymeric,
• acidic,
• toxic,
• neutral,
• smaller,
• legal,
• available,
• biological,
• small,
• organic,
• alternative,
• active,
• ceramic,
• stable,
• single,
• fatty,
• important,
• basic,
• soluble,
• possible,
• color,
• individual,
• aromatic,
• oxidizable,
• starting,
• weather,
• charged,
• granular,
• reactive,
• volcanic,
• controlled,
• metabolic,
• fibrous,
• molecular,
• essential,
• immediate,
• complex,
• solid,
• additional,
• biochemical,

Members for simple category precursor:

• cobalt_nitrate,
• acetone,
• wood,
• silicate_precursor,
• fruit_stone,
• bitumen,
• acrylate,
• ammoniac,
• succinic_acid,
• ether,
• alkaloid,
• chloride,
• tuff,
• boron_halide,
• phenolic,
• ester,
• seed,
• organic_gas,
• lignite,
• acetate,
• aragonite,
• silicate_material,
• germanium_hydride,
• amino-acid_tyrosine,
• diamine,
• halide,
• pitch,
• phenylalanine,
• ferric_oxalate,
• amide,
• ornithine,
• glucose,
• benzoate,
• liquid_monomer,
• chlorobenzene,
• hydrocarbon,
• carbon_source,
• trimer,
• lemongrass,
• lignin,
• asparagine,
• kaolinite,
• carbon,
• alkyl_bromide,
• phenol,
• carbohydrate,
• tyrosine,
• single_atom,
• fertilizer_waste,
• cyanogen_bromide,
• carboxylic_acid,
• aldehyde,
• carbonyl,
• peat,
• basic_carbonate,
• formaldehyde,
• silicon_precursor,
• nut_shell,
• colloidal_silica,
• cholesterol,
• glutamine,
• guanosine,
• phosphate,
• cysteine,
• metal_chloride,
• sodium_aluminate,
• whole_grain,
• coconut_husk,
• phenol_resin,
• naphthalene,
• fertilizer,
• urethane,
• methane,
• acetylene,
• steroid,
• polystyrene,
• siloxane,
• co2,
• potassium_silicate,
• labeled_acetate,
• sucrose,
• proline,
• carbonate,
• paper,
• potassium_perchlorate,
• ammonia,
• cobalt_acetate,
• barium_acetate,
• bamboo,
• atp,
• tryptophan,
• inosine,
• nickel_acetate,
• proteinaceous_material,
• cement,
• sawdust,
• activated_sugar,
• chlorophyll,
• dimer,
• silicone,
• titanium_chloride,
• sulfate,
• ribose,
• acrylic_polymer,
• metal_carbonyl,
• acetate_radical,
• kerosene,
• synthetic_ester,
• strontium_carbonate,
• glycine,
• purine,
• copper_carbonate,
• cu,
• pseudo_ephedrine,
• barium_carbonate,
• lactate,
• potassium_permanganate,
• citric_acid,
• natural_fiber,
• oxaloacetate,
• glutamate,
• protein,
• clay,
• chlorine_gas,
• lithium_silicate,
• sterol,
• iron_nitrate,
• phenolphthalein,
• shell,
• copper_nitrate,
• nitrate,
• petroleum_pitch,
• early_plant,
• ethene,
• polysaccharide,
• acrylic,
• acetylene_radical,
• organic_resin,
• sand,
• acid,
• palm-kernel_shell,
• fertiliser,
• serine,
• lecithin,
• pseudoephedrine,
• hydride,
• nitrogen_precursor,
• styrene,
• caffeine,
• cotton,
• cellulose,
• nucleotide,
• melamine,
• ephedrine,
• peroxide,
• metal_salt,
• oxide,
• inorganic_salt,
• cyanide,
• doc,
• aromatic_amine,
• alumina,
• pvc,
• aluminum_precursor,
• adenosine,
• nucleoside,
• talc,
• nitrate_salt,
• initiator,
• pet,
• co,
• tornado_watch,
• organic_compound,
• neutral_radical,
• fructose,
• recombinant-dna_molecule,
• personality,
• lipid,
• plant,
• corresponding_salt,
• water,
• azide,
• coconut_shell,
• oxalate,
• silica,
• metal_oxide,
• salt,
• metal_hydroxide,
• phenolic_compound,
• nickel_chloride,
• resin,
• sugar,
• nylon,
• metal_nitrate,
• nickel_carbonyl,
• ferric_nitrate,