Examples are given below.
Quality – goodness, kindness, beauty, intelligence, generosity, cleverness, obedience, honesty, brightness, wisdom, bravery, courage, hardness, softness
Action – laughter, theft, movement, judgment
State – childhood, boyhood, manhood, youth, slavery, sickness, poverty, death, sleep
The names of the arts and science are also abstract nouns. Examples are: physics, chemistry, grammar, music
Abstract nouns can be formed from adjectives, verbs and common nouns.
From adjectives
Kindness from kind
Bravery from brave
Illness from ill
Honesty from honest
From verbs
Obedience from obey
Growth from grow
Pleasure from please
From common nouns
Childhood from child
Slavery from slave