Phrase structure is the hierarchical arrangement of words in a sentence, showing how they are grouped into phrases and constituents.

A constituent is a group of words that functions as a single unit within a sentence, such as a noun phrase, verb phrase, or prepositional phrase.

The head of a phrase is the word that determines the syntactic category of the phrase, such as a noun in a noun phrase or a verb in a verb phrase.

A modifier is a word that modifies the head of a phrase, such as an adjective in a noun phrase or an adverb in a verb phrase.

A complement is a word that completes the meaning of the head of a phrase, such as a direct object in a verb phrase or a prepositional object in a prepositional phrase.

An adjunct is a word that adds additional information to a phrase, such as a prepositional phrase or an adverbial clause.

A clause is a phrase that consists of a noun phrase and a verb phrase, and it can stand alone as a sentence.

A prepositional phrase consists of a preposition and a noun phrase, and it functions as a modifier or complement in a sentence.

An adverbial phrase consists of an adverb and a verb phrase, and it functions as a modifier in a sentence.

Parsing is the process of breaking down a sentence into its constituent parts, such as phrases and clauses.

A tree diagram is a diagram that shows the hierarchical structure of a sentence, with the root node at the top and the leaves at the bottom.

Chunking is a technique for identifying the constituent parts of a sentence by grouping words together into phrases and clauses.

Tagging is a technique for assigning grammatical tags to words in a sentence, such as noun, verb, adjective, and adverb.

Parsing is a technique for automatically parsing sentences, breaking them down into their constituent parts.

Diagramming is a technique for visualizing the hierarchical structure of a sentence, using lines and boxes to represent the relationships between words and phrases.