Modifiers matching contamination:

• nonpolar,
• polar,
• colloidal,
• external,
• airborne,
• natural,
• particulate,
• possible,
• incidental,
• irritating,
• regulated,
• organic,
• regular,
• environmental,
• overhead,
• loose,
• undesired,
• basic,
• biological,
• potential,
• unwanted,
• solid,
• fragile,
• common,
• high,
• visible,
• atmospheric,
• microbial,
• gross,
• inorganic,
• chemical,
• inert,
• charged,
• volatile,
• residual,
• metallic,
• deleterious,
• liquid,
• hydrophilic,
• alkaline,
• insoluble,
• foreign,
• soft,
• metal,
• light,
• internal,
• minor,
• heavier,
• physical,
• industrial,
• extraneous,
• penetrating,
• animal,
• active,
• fecal,
• molecular,
• cross,
• salt,
• toxic,
• heavy,
• gaseous,
• harmful,
• hazardous,
• interfering,
• off,
• fluid,
• up,

Simple categories matching animal:

• food,
• feeder,
• barrier,
• data,
• part,
• display,
• covering,
• personality,
• parasite,
• claw,
• prey,
• desire,
• pest,
• marker,
• feed,
• feature,
• interaction,
• ear,
• product,
• souvenir,
• rotavirus,
• track,
• lover,
• toy,
• shelter,
• fish,
• disease,
• item,
• litter,
• waste,
• meat,
• drive,
• matter,
• picornavirus,
• experimentation,
• friend,
• care,
• shampoo,
• thyroid,
• serum,
• carcass,
• excretion,
• wax,
• supply,
• contaminant,
• eukaryote,
• spine,
• expert,
• control,
• sting,
• print,
• quality,
• teeth,
• facility,
• restraint,
• head,
• requirement,
• fluid,
• sacrifice,
• gathering,
• particle,
• bedding,
• ad,
• cause,
• figure,
• performance,
• statue,
• infection,
• voice,
• hazard,
• action,
• house,
• tissue,
• constraint,
• gland,
• power,
• injury,
• disturbance,
• cartilage,
• transport,
• species,
• container,
• lipase,
• plankton,
• vocalization,
• nutrition,
• drug,
• excrement,
• wellbeing,
• fur,
• form,
• unit,
• artefact,
• model,
• protein,
• study,
• mask,
• contamination,
• invertebrate,
• response,
• excreta,
• symbol,
• creature,
• movement,
• nutrient,
• show,
• bite,
• character,
• organ,
• magazine,
• article,
• predator,
• inhabitant,
• sound,
• helminth,
• illness,
• image,
• feces,
• derivative,
• style,
• host,
• pheromone,
• technology,
• record,
• jewelry,
• manure,
• fodder,
• hair,
• use,
• pathogen,
• matrix,
• spoor,
• event,
• housing,
• farm,
• sanctuary,
• pollinator,
• resident,
• community,
• organs,
• polysaccharide,
• biology,
• proteinase,
• work,
• call,
• poison,
• artifact,
• pattern,
• ride,
• organisation,
• sign,
• establishment,
• enclosure,
• clue,
• offal,
• creation,
• meal,
• material,
• information,
• allergen,
• cell,
• worker,
• set,
• criterion,
• pet,
• variable,
• life,
• experiment,
• home,
• practice,
• scavenger,
• field,
• tumour,
• essence,
• enterprise,
• odor,
• attribute,
• dance,
• tumor,
• park,
• business,
• embryo,
• sample,
• sense,
• byproduct,
• industry,
• livestock,
• mixture,
• property,
• welfare,
• hide,
• bones,
• target,
• disorder,
• trait,
• scent,
• behaviour,
• behavior,
• bait,
• egg,
• rennet,
• protease,
• body,
• appendage,
• farming,
• research,
• film,
• avatar,
• protection,
• blood,
• substance,
• science,
• gum,
• organism,
• production,
• secretion,
• milk,
• carrier,
• agent,
• cancer,
• photography,
• pendant,
• centre,
• repellent,
• physiology,
• metabolite,
• foodstuff,
• constituent,
• characteristic,
• endeavor,
• process,
• component,
• health,
• noise,
• steroid,
• smell,
• education,
• evidence,
• level,
• clone,
• microbe,
• procedure,
• cat,
• professional,
• mite,
• existence,
• laws,
• hybrid,
• structure,
• enzyme,
• microorganism,
• relative,
• race,
• taxon,
• area,
• eyes,
• source,
• urine,
• activity,
• origin,
• ingredient,
• horn,
• residue,
• forage,
• plasmodium,
• perfume,
• vertebrate,
• agriculture,
• decoy,
• sport,
• system,
• disposal,
• habitat,