4. Nouns

Abstract Nouns refer to concepts, feelings, ideas or things which can not be touched, felt or seen.

Features:

1. They cannot be perceived by five human senses.
2. They are something which is not physical.
3. They are names given to a state of mind or quality or name of action.

Examples:

Freedom, happiness, sickness, childhood, bravery, honesty, wisdom, dance, growth, etc.

Abstract Nouns are formed by:

1. Adding suffixes like -ry, -ness, -ship, -hood, -dom, etc. to adjectives, verbs or common nouns.
2. Altering some letters of the original word.

Examples: