-ish / -ity
-th / -ry
-ism / -ility
-ence
-ness
100

pessimistic

pessimism

100

patient

patience

100

selfish

selfishness

100

foolish

foolishness

100

honest

honesty

200

brave

bravery

200

accurate

accuracy

200

mature

maturity

200

optimistic

optimism

200

reliable

reliability

300

violent

violence

300

stupid

stupidity

300

warm

warmth

300

possible

possibility

300

safe

safety

400

loyal

loyalty

400

popular

popularity

400

proud

pride

400

necessary

necessity

400

strong

strength

500

realistic

realism

500

ill

illness

500

anxious

anxiety

500

superior

superiority

500

inferior

inferiority