Modifiers matching glass:

• harder,
• hard,
• inhomogeneous,
• flat,
• black,
• dimensional,
• fragile,
• hollow,
• plane,
• decorative,
• opaque,
• colored,
• natural,
• thin,
• polished,
• clear,
• under,
• warm,
• inexpensive,
• pure,
• stained,
• nearby,
• working,
• blown,
• optical,
• inorganic,
• expensive,
• melting,
• tall,
• broken,
• small,
• prepared,
• amorphous,
• cheap,
• beautiful,
• durable,
• transparent,
• persian,
• fixed,
• safe,
• curved,
• coloured,
• resistant,
• artificial,
• textured,
• fine,
• grown,
• large,
• interior,
• cold,
• ornamental,
• special,
• functional,
• architectural,
• industrial,
• soft,
• typical,
• antique,
• narrow,
• handmade,

Simple categories matching hard:

• scale,
• material,
• chemical,
• devices,
• surface,
• tissue,
• problem,
• epithelium,
• essence,
• artifact,
• projectile,
• wood,
• object,
• washer,
• measure,
• liquor,
• impediment,
• adhesive,
• solid,
• body,
• info,
• subject,
• ligand,
• incentive,
• time,
• soil,
• appendage,
• bones,
• event,
• profession,
• rock,
• tick,
• part,
• stone,
• food,
• ball,
• point,
• use,
• paper,
• acceleration,
• variable,
• flooring,
• grass,
• starches,
• work,
• film,
• dog,
• substance,
• softwood,
• hardwood,
• feed,
• region,
• structure,
• substrate,
• ground,
• appliance,
• yarn,
• bottle,
• job,
• condition,
• landscaping,
• lolly,
• drink,
• ferrite,
• block,
• coal,
• alloy,
• spice,
• armor,
• constituent,
• compound,
• shell,
• organism,
• fat,
• times,
• furniture,
• output,
• mineral,
• tag,
• procedure,
• evidence,
• pavement,
• labor,
• aggregate,
• science,
• ore,
• waste,
• crystal,
• fact,
• disk,
• stuff,
• powder,
• thing,
• detector,
• implement,
• attribute,
• training,
• gemstone,
• notebook,
• segment,
• mast,
• straw,
• animal,
• coating,
• defence,
• belt,
• study,
• room,
• copy,
• wax,
• mode,
• wire,
• sausage,
• connection,
• bronze,
• quartz,
• ware,
• unit,
• beverage,
• identification,
• target,
• choice,
• particulate,
• commitment,
• hat,
• button,
• veg,
• original,
• content,
• engineering,
• wedge,
• resin,
• particle,
• area,
• benefit,
• abrasive,
• nonmetal,
• works,
• law,
• pine,
• protein,
• nut,
• water,
• floor,
• issue,
• medication,
• thermoplastic,
• armour,
• cover,
• furnishing,
• bone,
• stain,
• layer,
• access,
• possession,
• papers,
• activity,
• institution,
• item,
• instrument,
• booze,
• boundary,
• sweet,
• commodity,
• packing,
• cracker,
• brush,
• place,
• maple,
• exercise,
• instrumentality,
• fibre,
• sport,
• carbon,
• beads,
• reference,
• assets,
• failure,
• hydrocarbon,
• pipe,
• glass,
• apple,
• prey,
• fruit,
• conveyance,
• product,
• utensil,
• indicator,
• pad,
• infrastructure,
• article,
• ip,
• aspect,
• portion,
• matter,
• mask,
• tool,
• needle,
• discipline,
• scientist,
• lump,
• input,
• clay,
• drug,
• meat,
• language,
• sheet,
• insulator,
• steel,
• component,
• base,
• monomer,
• system,
• labour,
• cheese,
• formation,
• lure,
• filler,
• workout,
• oxide,
• case,
• weapon,
• track,
• rule,
• service,
• residue,
• alcohol,
• device,
• insect,
• butter,
• piece,
• data,
• helmet,
• grit,
• fault,
• space,
• fish,
• board,
• disease,
• technology,
• investment,
• vehicle,
• skill,
• fixing,
• wheat,
• control,
• power,
• format,
• elastomer,
• ion,
• metal,
• bottom,
• drive,
• constraint,
• panel,
• candy,
• acid,
• key,
• capital,
• matrix,
• fastener,
• rind,
• professional,
• confectionery,
• wealth,
• knowledge,
• equipment,
• contaminant,
• veggie,
• obstruction,
• characteristic,
• outcome,
• information,
• disturbance,
• fastening,
• edge,
• plastic,
• biscuit,
• foodstuff,
• vegetable,
• backing,
• fiber,
• container,
• pen,
• form,
• gem,
• crime,
• bait,
• spirits,
• rubber,
• tree,
• feature,
• seed,
• medium,
• toy,
• narcotic,
• ingredient,
• wall,
• fuel,
• deposit,
• grain,
• plate,
• coral,
• sector,
• fabric,
• laser,
• barrier,