Modifiers matching catalyst:

• useful,
• necessary,
• enzymatic,
• metal,
• biological,
• cheap,
• strong,
• homogeneous,
• heavy,
• acidic,
• liquid,
• cultural,
• acid,
• extraneous,
• related,
• macromolecular,
• natural,
• common,
• expensive,
• cationic,
• soluble,
• volatile,
• precious,
• chemical,
• traditional,
• metallic,
• environmental,
• major,
• appropriate,
• active,
• usual,
• proteinaceous,
• suitable,
• possible,
• alternative,
• optical,
• ferromagnetic,
• basic,
• solid,
• diverse,
• heterogeneous,
• base,
• benign,
• external,
• conventional,
• granular,
• single,
• auxiliary,
• complex,

Simple categories matching cationic:

• carrier,
• metal,
• drug,
• antiseptic,
• lipid,
• component,
• material,
• substance,
• compound,
• polymer,
• salt,
• antibiotic,
• group,
• reactant,
• mineral,
• anaesthetic,
• medication,
• agent,
• anesthetic,
• marker,
• surfactant,
• catalyst,
• current,
• ion,
• ligand,
• chemical,
• contaminant,
• system,