Modifiers matching contamination:

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

Simple categories matching high:

• structure,
• equipment,
• post,
• location,
• material,
• food,
• implement,
• polysaccharide,
• traffic,
• object,
• place,
• space,
• ceiling,
• meat,
• surface,
• point,
• wave,
• vehicle,
• condiment,
• barrier,
• explosive,
• school,
• installation,
• table,
• area,
• rank,
• ground,
• mountain,
• plateau,
• bird,
• card,
• control,
• priest,
• slope,
• elevation,
• arousal,
• force,
• trap,
• hill,
• style,
• song,
• interest,
• obstacle,
• thing,
• emotion,
• curvature,
• person,
• substance,
• culture,
• weight,
• authority,
• room,
• spot,
• language,
• metal,
• feature,
• load,
• ability,
• job,
• mood,
• value,
• office,
• sportsman,
• content,
• distance,
• compound,
• state,
• alloy,
• item,
• usage,
• society,
• status,
• street,
• mass,
• disaster,
• polymer,
• ingredient,
• publicity,
• spread,
• wind,
• activity,
• spire,
• signal,
• meal,
• level,
• official,
• concentration,
• information,
• discharge,
• bill,
• energy,
• contamination,
• position,
• complexity,
• molecule,
• ridge,
• building,
• education,
• component,
• perch,