Modifiers matching pollution:

• particulate,
• local,
• significant,
• hazardous,
• airborne,
• marine,
• urban,
• adverse,
• ambient,
• environmental,
• up,
• solid,
• industrial,
• atmospheric,

Simple categories matching significant:

• artifact,
• event,
• occurrence,
• gain,
• change,
• building,
• horizon,
• activity,
• movement,
• compound,
• illness,
• damage,
• disease,
• choice,
• barrier,
• disability,
• pathogen,
• information,
• sea,
• structure,
• skill,
• benefit,
• incident,
• agent,
• point,
• service,
• value,
• source,
• destabilization,
• work,
• trait,
• period,
• subject,
• discipline,
• fee,
• advantage,
• transactions,
• distress,
• volume,
• party,
• curve,
• offence,
• profession,
• achievement,
• goal,
• arts,
• phenomenon,
• assets,
• item,
• equipment,
• complication,
• home,
• actor,
• opacity,
• practice,
• issue,
• organism,
• landmark,
• expenditure,
• losses,
• example,
• handicap,
• consequence,
• impairment,
• industry,
• amount,
• grouping,
• blemish,
• process,
• edition,
• day,
• connection,
• loss,
• problem,
• quality,
• situation,
• system,
• judgment,
• institution,
• people,
• language,
• deity,
• investment,
• values,
• development,
• data,
• genre,
• organisation,
• symptom,
• iteration,
• ceremony,
• crime,
• marking,
• production,
• quantity,
• trail,
• entity,
• growth,
• infection,
• contract,
• lesion,
• knowledge,
• limitation,
• solid,
• education,
• disaster,
• offense,
• discomfort,
• malpractice,
• harm,
• disorder,
• accomplishment,
• circumstances,
• result,
• topic,
• content,
• pollution,
• property,
• location,
• transaction,
• training,
• victory,
• community,
• sequela,
• pixel,
• level,
• food,
• microorganism,
• mass,
• tree,
• star,
• failure,
• variable,
• effort,
• rite,
• times,
• assistance,
• abnormality,
• extra,
• signal,
• theme,
• land,
• factor,
• impact,
• mineral,
• debt,
• omission,
• relationship,
• text,
• way,
• variation,
• act,
• symbol,
• subgroup,
• days,
• part,
• material,
• attribute,
• resource,
• herbicide,
• representation,
• difficulty,
• document,
• pain,
• site,
• morbidity,
• pathology,
• catastrophe,
• concept,
• competition,
• payment,
• enlargement,
• date,
• modification,
• place,
• voyage,
• colors,
• injury,
• account,
• emergency,
• weather,
• condition,
• wound,
• space,
• labour,
• behavior,
• hepatitis,
• magazine,
• psychosis,
• component,
• expense,
• transition,
• output,
• church,
• sound,
• boundary,
• exchange,
• study,
• fabric,
• category,
• discovery,
• support,
• tumor,
• image,
• obstruction,
• force,
• use,
• defect,
• procedure,
• molecule,
• power,
• alteration,
• department,
• reaction,
• pattern,
• adult,
• journal,
• salt,
• decision,
• improvement,
• works,
• storm,
• trauma,
• motion,
• portion,
• page,
• sector,
• object,
• control,
• interaction,
• facility,
• metal,
• publicity,
• shock,
• announcement,
• measure,
• role,
• juncture,
• disturbance,
• figure,
• ritual,
• parcel,
• dimension,
• product,
• project,
• difference,
• person,
• input,
• contribution,
• credit,
• accident,
• imperfection,
• conduct,
• inspection,
• forum,
• liabilities,
• market,
• state,
• protection,
• constituent,
• unit,
• function,
• substance,
• monument,
• hazard,
• terms,
• action,
• outbuilding,
• income,
• feature,
• plant,
• body,
• happening,
• interest,
• details,
• misconception,
• cost,
• incentive,
• anniversary,
• instrument,
• germ,
• occasion,
• computation,
• error,
• drug,
• experience,
• artefact,
• status,
• cause,
• outlet,
• characteristic,
• thing,
• interference,
• area,
• group,
• adversity,
• outbreak,
• organization,