Modifiers matching iron:

• metal,
• tough,
• solid,
• soft,
• virgin,
• organic,
• magnetic,
• special,
• liquid,

Simple categories matching organic:

• production,
• brew,
• compound,
• entity,
• material,
• solvent,
• grain,
• matter,
• sound,
• substance,
• pesticide,
• equipment,
• infusion,
• form,
• reactant,
• vegetable,
• motif,
• volatile,
• molecule,
• jelly,
• stone,
• chemical,
• surface,
• cause,
• fibre,
• finish,
• precursor,
• plastic,
• intermediate,
• substrate,
• condition,
• causation,
• amine,
• tissue,
• disorder,
• livestock,
• halide,
• mixture,
• narcotic,
• semiconductor,
• formation,
• sheet,
• device,
• residue,
• iodide,
• part,
• base,
• petrochemical,
• garbage,
• restrainer,
• model,
• solute,
• carbon,
• intellectual,
• alteration,
• alcohol,
• residual,
• rest,
• herbicide,
• goody,
• foodstuff,
• macromolecule,
• bait,
• change,
• kingdom,
• keyboard,
• inhibitor,
• juice,
• space,
• sugar,
• event,
• smell,
• gum,
• allergen,
• treasure,
• byproduct,
• species,
• aggregate,
• protein,
• chloride,
• matrix,
• composition,
• polymer,
• oxidant,
• impurity,
• place,
• fluid,
• coating,
• instrumentation,
• involvement,
• mulch,
• pastry,
• bromine,
• spray,
• lesion,
• meal,
• green,
• milk,
• dust,
• malady,
• iron,
• tea,
• unit,
• roof,
• collection,
• filler,
• thickener,
• deposit,
• property,
• phosphate,
• artefact,
• information,
• staple,
• sediment,
• shape,
• complex,
• dirt,
• starch,
• oxide,
• nitrile,
• abrasive,
• adhesive,
• seed,
• area,
• sulfide,
• fluoride,
• feed,
• package,
• origin,
• body,
• insulator,
• reaction,
• salt,
• monomer,
• odor,
• bedding,
• grouping,
• sludge,
• buffer,
• receptor,
• thing,
• whole,
• layer,
• fabric,
• plant,
• flour,
• cotton,
• level,
• outlet,
• wax,
• pathology,
• oil,
• powder,
• jewelry,
• commodity,
• pollutant,
• quality,
• derivative,
• herb,
• particulate,
• spice,
• sulfur,
• operation,
• cyanide,
• red,
• veg,
• detergent,
• structure,
• rubber,
• symptom,
• phosphorus,
• abnormality,
• gemstone,
• halogen,
• illness,
• transformation,
• azide,
• waste,
• recycling,
• force,
• confection,
• lubricant,
• fraction,
• confectionery,
• psychosis,
• debris,
• control,
• insecticide,
• resin,
• contamination,
• antimicrobial,
• scent,
• process,
• parasite,
• synthesis,
• micronutrient,
• microorganism,
• pathogen,
• work,
• hydrocarbon,
• constituent,
• metabolite,
• fertilizer,
• medium,
• contaminant,
• melon,
• binder,
• gem,
• content,
• mushroom,
• power,
• colloid,
• stuff,
• zone,
• agent,
• manure,
• veggie,
• starches,
• ink,
• artifact,
• ester,
• metal,
• wetland,
• meat,
• acid,
• sweetener,
• component,
• conductor,
• fragment,
• spirits,
• rock,
• nut,
• cloth,
• operations,
• dyestuff,
• particle,
• excrement,
• berry,
• container,
• system,
• flower,
• apparel,
• sulphide,
• silicate,
• group,
• state,
• ingredient,
• poison,
• sulfonate,
• beverage,
• foam,
• phospholipid,
• organism,
• carrier,
• fertiliser,
• extract,
• drug,
• mineral,
• disturbance,
• label,
• aerosol,
• elements,
• fuel,
• disease,
• gas,
• object,
• relic,
• activity,
• cavity,
• syndrome,
• hydroxide,
• film,
• phenomenon,
• nitrate,
• category,
• salad,
• soil,
• organs,
• dish,
• cofactor,
• carbonyl,
• ligand,
• diluent,
• detritus,
• explosive,
• being,
• toxin,
• product,
• medicine,
• accessory,
• fiber,
• item,
• host,
• stain,
• surfactant,
• peroxide,
• nutrient,
• preservative,
• source,
• pigment,
• fungicide,
• textile,
• condiment,
• radical,
• drink,
• dielectric,
• solid,
• elastomer,
• food,
• liquid,
• chemistry,
• nature,
• fare,
• chocolate,
• instrument,
• edible,
• fruit,
• forage,