Modifiers matching vegetation:

• natural,
• mixed,
• sensitive,
• permanent,
• dense,
• larger,
• heavy,
• woody,
• upland,
• thick,
• seasoned,
• dead,
• native,
• leafy,
• tall,
• unwanted,
• flammable,
• deciduous,
• coastal,
• higher,
• tender,
• artificial,
• homogenous,
• thin,
• unique,
• valuable,
• low,
• open,
• strong,
• surrounding,
• terrestrial,
• aquatic,
• tropical,
• round,
• combustible,
• old,
• desirable,
• undesirable,
• actual,
• marginal,
• rough,
• unusual,
• long,
• succulent,
• healthy,

Simple categories matching unwanted:

• code,
• microorganism,
• item,
• residue,
• pest,
• panel,
• effluent,
• papers,
• material,
• noise,
• software,
• herbivore,
• part,
• creature,
• organism,
• substance,
• growth,
• area,
• email,
• entrant,
• mineral,
• bedfellow,
• animal,
• person,
• insect,
• event,
• treasure,
• solid,
• contaminant,
• grub,
• behavior,
• content,
• smell,
• information,
• consequence,
• behaviour,
• sediment,
• article,
• fabric,
• volatile,
• liquid,
• substrate,
• predator,
• textile,
• happening,
• message,
• layer,
• debris,
• incident,
• rodent,
• stain,
• adulterant,
• cell,
• target,
• child,
• species,
• communication,
• state,
• soil,
• input,
• critter,
• pet,
• larva,
• reptile,
• odour,
• vegetation,
• light,
• mail,
• coating,
• reaction,
• folder,
• trace,
• inhabitant,
• component,
• infection,
• agent,
• contamination,
• hardwood,
• stuff,
• scavenger,
• friend,
• disturbance,
• user,
• fluid,
• hair,
• situation,
• people,
• conduct,
• nuisance,
• nonsense,
• matter,
• furniture,
• blemish,
• byproduct,
• feeder,
• container,
• fish,
• view,
• medium,
• process,
• particulate,
• symptom,
• place,
• game,
• caller,
• gas,
• motion,
• particle,
• ingredient,
• filler,
• fuel,
• intruder,
• solicitation,
• equipment,
• germ,
• microbe,
• intermediate,
• yeast,
• program,
• artifact,
• compound,
• effect,
• deposit,
• file,
• impurity,
• ion,
• extra,
• variation,
• interference,
• space,
• action,
• grass,
• waste,
• tissue,
• phenomenon,
• document,
• acceleration,
• thing,
• thought,
• advert,
• chemical,
• plant,
• constituent,
• portion,
• protein,
• condition,
• variable,
• atom,
• metal,
• spam,
• acid,
• surface,
• artefact,
• branch,
• appliance,
• advertisement,
• medication,
• instrument,
• elements,
• feature,
• response,
• pesticide,
• souvenir,
• movement,
• intrusion,
• illumination,
• odor,
• signal,
• sound,
• bird,
• structure,
• trait,
• emotion,
• change,
• molecule,
• parasite,
• occurrence,
• fungus,
• solute,
• mammal,
• bacteria,
• tree,
• body,
• vermin,
• literature,
• activity,
• piece,
• shade,
• pollutant,
• energy,
• comment,
• entity,
• object,
• emission,