Modifiers matching catalyst:

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

Simple categories matching precious:

• matter,
• product,
• weapon,
• metal,
• stone,
• alloy,
• sample,
• group,
• gemstone,
• deposit,
• nonmetal,
• tree,
• gem,
• material,
• property,
• object,
• liberty,
• keepsake,
• coral,
• resin,
• emotion,
• wood,
• botanical,
• fabric,
• herb,
• fiber,
• mineral,
• thing,
• necklace,
• values,
• memory,
• relic,
• item,
• hardwood,
• ornament,
• assets,
• file,
• jewelry,
• container,
• seasoning,
• textile,
• salt,
• fish,
• quality,
• fauna,
• ingredient,
• artefact,
• friend,
• trinket,
• content,
• works,
• drug,
• substance,
• fuel,
• document,
• mixture,
• oxide,
• spice,
• display,
• catalyst,
• artifact,
• food,
• pendant,
• pigment,
• tradition,
• antiquity,
• stuff,
• surface,
• data,
• commodity,
• photograph,
• skin,
• article,
• price,
• fibre,
• ore,
• fluid,
• balsam,
• liquid,
• resource,
• jewel,
• animal,
• clay,
• scrap,
• treasure,
• rock,
• beads,
• substrate,
• cereal,