Nouns can be used as the subject, direct object, and indirect object of a verb; the object of a preposition; and an adverb of adjective. Nouns also can show possession.

Subject: The mailcarrier always rings twice. Tulips are early spring flowers. (Tells who or what does or is something.)

Direct object: I finally sold my car. (Tells what is sold.)

Indirect object: Harold gave the cat another olive. (Tells to whom he gave the olive.)

Object of preposition: She gave directions over the phone. (Tells what is the object of the preposition over.)

Adverb: The train leaves today. (Tells when.)

Adjective: The office building faces the zoo. (Tells what kind, which one.)

Possession: The movie’s plot fooled no one. (Shows ownership or possession.)