Category Nuances for formaldehyde:

• secondary,
• toxic,
• strong,
• mild,
• harmful,
• biodegradable,
• organic,
• undesirable,
• corrosive,
• pure,
• foreign,
• conventional,
• soluble,
• volatile,
• dangerous,
• relevant,
• irritating,
• artificial,
• poisonous,
• single,
• atmospheric,
• starting,
• protective,
• polymeric,
• typical,
• malodorous,
• acidic,
• unhealthy,
• adjuvant,
• valuable,
• reactive,
• chemical,
• carcinogenic,
• hazardous,
• acetic,
• intermediate,
• molecular,
• lightweight,
• special,
• acid,
• important,
• psychoactive,
• complex,
• common,
• home,
• preservative,
• raw,
• airborne,
• carbonyl,
• indoor,
• light,
• simple,
• strange,
• noxious,
• individual,
• deadly,
• synthetic,
• polar,
• useful,
• combustible,
• additional,
• active,
• base,
• harsh,
• nasty,
• small,
• aromatic,
• inorganic,
• liquid,
• unwanted,
• residual,
• antibacterial,
• caustic,
• difficult,
• decorative,
• minute,
• off,
• illegal,
• deleterious,
• incoming,
• environmental,
• general,
• miscellaneous,
• hydrophilic,
• industrial,
• several,
• cheap,
• out,
• gaseous,

Simple Categories for formaldehyde:

• preservative,
• constituent,
• chemical,
• compound,
• volatile,
• contaminant,
• substance,
• reactant,
• carbonyl,
• gas,
• acid,
• intermediate,
• fumigant,
• waste,
• material,
• solute,
• bactericide,
• substrate,
• component,
• derivative,
• residue,
• precursor,
• matter,
• thing,
• particle,
• inhalant,
• alkylbenzene,
• hydrocarbon,
• group,
• fumes,
• monomer,
• petrochemical,
• air,
• aldehyde,