Modifiers matching catalyst:

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

Simple categories matching granular:

• leukocyte,
• substance,
• polymerization,
• carrier,
• material,
• substrate,
• matter,
• slurry,
• filling,
• component,
• particle,
• motion,
• solid,
• foodstuff,
• flow,
• sediment,
• enzyme,
• pesticide,
• chemical,
• metal,
• rock,
• property,
• soil,
• filler,
• process,
• fertilizer,
• medium,
• aquifer,
• system,
• surface,
• sweetener,
• protease,
• starches,
• fertiliser,
• salt,
• cargo,
• article,
• ingredient,
• fuel,
• item,
• nature,
• change,
• composition,
• structure,
• cell,
• commodity,
• waste,
• food,
• mineral,
• fruit,
• mixture,
• feed,
• catalyst,
• product,
• contaminant,
• explosive,
• precursor,
• avalanche,