1. A noun phrase consists of a noun and any modifiers that come before or after the noun. 2. Modifiers can include articles (a, an, the), adjectives, determiners, and pronouns. 3. Noun phrases can function as subjects, objects, or complements in a sentence. 4. Noun phrases can be singular or plural. 5. Noun phrases can be definite (specific) or indefinite (non-specific). 6. Noun phrases can be simple (consisting of just a noun) or complex (consisting of multiple words). 7. Noun phrases can be modified by prepositional phrases or relative clauses. 8. Noun phrases can be used to provide more information about a person, place, thing, or idea.