Modifiers matching catalyst:

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

Simple categories matching acidic:

• catalyst,
• salt,
• wine,
• food,
• beverage,
• marinade,
• polysaccharide,
• fruit,
• substance,
• item,
• metabolite,
• nature,
• vegetable,
• ingredient,
• thing,
• lipid,
• ligand,
• foodstuff,
• material,
• aggregate,
• rock,
• matter,
• coagulant,
• medication,
• liquid,
• drink,
• solution,
• drug,
• oxide,
• property,
• seasoning,
• chemical,
• flavor,
• drinking,
• nitrate,
• constituent,
• fluid,
• zeolite,
• agent,
• oligosaccharide,
• acid,
• antibiotic,
• group,
• wetland,
• medicine,
• anion,
• ion,
• gas,
• level,
• disinfectant,
• molecule,
• mixture,
• macromolecule,
• buffer,
• medium,
• secretion,
• poison,
• medicament,
• fertilizer,
• waste,
• compound,
• substrate,
• monomer,
• component,
• metal,
• contaminant,
• condiment,
• carbohydrate,
• bath,
• veggie,
• surface,
• liquor,
• grouping,
• water,
• soil,
• precipitation,
• meat,
• filler,
• radical,
• inhibitor,
• nsaid,
• paper,
• juice,
• halide,
• pharmaceutical,
• chloride,
• solute,
• grain,
• precursor,
• tenderizer,
• system,
• fertiliser,
• residue,
• protein,
• mineral,
• mixer,
• polymer,