Category Nuances for null:

• premium,
• polymeric,
• suitable,
• environmental,
• plastic,
• persistent,
• toxic,
• layer,
• resilient,
• synthetic,
• diverse,
• troublesome,
• rigid,
• ordinary,
• contemporary,
• artificial,
• electronic,
• fabricated,
• upper,
• standard,
• thermoplastic,
• similar,
• amorphous,
• polar,
• sensitive,
• uneven,
• glossy,
• thermal,
• common,
• essential,
• organic,
• auxiliary,
• popular,
• aliphatic,
• reactive,
• compatible,
• serious,
• high,
• harder,
• flat,
• shiny,
• detrimental,
• cheaper,
• unfriendly,
• fragile,
• stylish,
• harmful,
• bulky,
• basic,
• watertight,
• several,
• aromatic,
• coated,
• photoconductive,
• interesting,
• outdoor,
• nonmetallic,
• base,
• unhealthy,
• compact,
• nonmetal,
• effective,
• soft,
• acidic,
• unusual,
• thermosetting,
• dangerous,
• sexy,
• raw,
• ionic,
• heavy,
• pure,
• non-combustible,
• dissimilar,
• smooth,
• special,
• lightweight,
• critical,
• protective,
• transparent,
• hazardous,
• cardiac,
• flexible,
• hard,
• absorbent,
• mixed,
• inflammable,
• calendered,
• corrosive,
• long,
• thin,
• macromolecular,
• approved,
• modern,
• nonconductive,
• strong,
• non-ferrous,
• dry,
• airborne,
• important,
• out,
• stable,
• graphic,
• opaque,
• rugged,
• undesirable,
• useful,
• glassy,
• innovative,
• airtight,
• simple,
• linear,
• natural,
• permanent,
• current,
• clear,
• viscous,
• white,
• offer,
• powdered,
• medical,
• permeable,
• combustible,
• subsurface,
• tough,
• additional,
• residual,
• liquid,
• difficult,
• traditional,
• sturdy,
• clean,
• accessible,
• unconventional,
• alternative,
• inexpensive,
• heavier,
• sticky,
• resistant,
• sundry,
• exotic,
• nonporous,
• ultrasonic,
• solid,
• single,
• charged,
• hollow,
• friendly,
• softer,
• translucent,
• noxious,
• semirigid,
• limited,
• hydrophobic,
• gummy,
• key,
• conventional,
• impervious,
• individual,
• durable,
• crystalline,
• nonrenewable,
• nonconducting,
• complementary,
• commercial,
• waterproof,
• odd,
• damaging,
• industrial,

Simple Categories for null:

• polymer,
• fibre,
• part,
• thing,
• material,
• chemical,
• compound,
• group,
• substrate,
• system,
• waste,
• substance,
• way,
• deposit,
• solid,
• arrhythmia,
• resin,
• fraction,
• precursor,
• particle,
• component,
• connection,
• conductor,
• matter,
• activity,
• item,
• contaminant,
• foam,