Modifiers matching activator:

• auxiliary,
• metal,
• physical,
• potent,
• physiological,
• natural,
• cellular,
• polar,
• single,
• chemical,
• thermal,
• corrosive,
• immune,
• pharmacological,
• artificial,
• alkaline,
• exogenous,
• physiologic,
• individual,
• toxic,
• biological,
• endogenous,
• acid,
• metabolic,
• harsh,
• neural,
• salt,
• pathological,

Simple categories matching polar:

• bond,
• compound,
• activator,
• gas,
• group,
• component,
• substance,
• metal,
• rubber,
• resin,
• sorbent,
• solvent,
• residue,
• radical,
• fluid,
• portion,
• intermediate,
• impurity,
• bird,
• diluent,
• monomer,
• material,
• macromolecule,
• constituent,
• chemical,
• molecule,
• animal,
• polymer,
• liquid,
• contamination,
• dielectric,
• region,
• substrate,
• reagent,
• reactant,
• moiety,
• fraction,
• particle,
• metabolite,
• adhesive,
• nutrient,
• ligand,
• organism,
• lubricant,
• plastic,
• mammal,
• unit,
• fauna,
• fiber,
• drug,
• elastomer,
• solute,
• base,
• hormone,
• solid,
• protein,
• pesticide,
• surface,
• insulator,
• contaminant,
• derivative,
• medium,
• structure,
• volatile,
• oil,
• lipid,
• atom,