Why are abstract nouns used?

An abstract noun is a Word for something that can't be experienced by any of the five physical senses; something that can't be seen, heard, smelled, tasted, or touched. An abstract noun is a Word for something that is known, learned, thought, understood, or felt emotionally.

All nouns (abstract or common) are used as the subject of a sentence or a clause and the object of a verb or a preposition.

EXAMPLES

subject of the sentence: My educationis very important to me.

subject of the clause: The new procedure, an idea submitted by staff, has been approved.

direct object of the verb: The movie is a comedy.

object of the preposition: We've prepared the food for tomorrow.