Modifiers matching isotope:

• radioactive,
• atomic,
• heavier,
• heavy,
• stable,
• elemental,

Simple categories matching stable:

• material,
• hadron,
• level,
• surface,
• protein,
• object,
• carrier,
• metal,
• matrix,
• potential,
• foundation,
• handicap,
• mineral,
• chloride,
• organ,
• soil,
• vaccine,
• flooring,
• structure,
• security,
• profession,
• building,
• area,
• property,
• particle,
• aggregate,
• life,
• investment,
• nation,
• substrate,
• point,
• fraction,
• association,
• web,
• compound,
• gap,
• medium,
• macromolecule,
• time,
• group,
• phosphate,
• ion,
• work,
• disorder,
• matter,
• hydrate,
• performance,
• intermediate,
• outlet,
• arrangement,
• fibre,
• zeolite,
• contaminant,
• barrier,
• ordering,
• nitride,
• complication,
• emotion,
• force,
• construction,
• gas,
• settlement,
• item,
• virus,
• enzyme,
• hydride,
• molecule,
• furniture,
• ground,
• resin,
• fabric,
• foam,
• paper,
• support,
• radical,
• lamp,
• price,
• attribute,
• precursor,
• activity,
• hydrocarbon,
• linkage,
• carbohydrate,
• characteristic,
• wood,
• relationship,
• disability,
• shape,
• installation,
• loan,
• form,
• value,
• liquid,
• atom,
• food,
• part,
• society,
• element,
• storage,
• clock,
• sediment,
• lacquer,
• community,
• condition,
• site,
• state,
• salt,
• phase,
• job,
• isomer,
• stratum,
• cause,
• complex,
• container,
• polymer,
• article,
• expense,
• market,
• electrode,
• isotope,
• constituent,
• place,
• alloy,
• grouping,
• pad,
• buffer,
• cell,
• reactant,
• company,
• instrument,
• trait,
• solvent,
• fluid,
• polyamide,
• monomer,
• star,
• assets,
• organs,
• body,
• insulator,
• pattern,
• currency,
• floor,
• base,
• derivative,
• tissue,
• equipment,
• disposition,
• quantity,
• administration,
• source,
• ore,
• rna,
• commodity,
• fat,
• environment,
• pillow,
• carbonate,
• business,
• adhesive,
• nature,
• flame,
• formation,
• sector,
• mrna,
• paraffin,
• region,
• polysaccharide,
• institution,
• ketone,
• unit,
• illness,
• carbonyl,
• entity,
• pigment,
• location,
• difficulty,
• pathogen,
• plastic,
• disease,
• feature,
• pesticide,
• substance,
• chemical,
• species,
• machine,
• oxide,
• filler,
• bond,
• line,
• trade,
• union,
• component,
• debt,
• occupation,
• rock,
• quality,
• reservoir,
• thermoplastic,
• housing,
• fiber,
• sugar,
• country,
• system,
• layer,
• thing,