This document discusses constituents and phrases. It defines a phrase as a syntactic arrangement consisting of parts, usually two constituents. Examples of phrases and their constituents are provided, such as "the man" with constituents "the" and "man". Phrases can contain other phrases as constituents to form hierarchical structures. Noun phrases are discussed in detail, including their possible constituents like determiners, adjectives, prepositional phrases, relative clauses, and appositives. The ordering and functions of different types of constituents in noun phrases are explained through numerous examples.