part of speech

Every word can be categorized as a part of speech based on its function in a sentence. In English there are usually eight parts of speech: nouns, pronouns, verbs, adverbs, adjectives, prepositions, conjunctions, and yikes! Interjections.

Dividing words into the parts of speech is a great way to understand how sentences work. In a nutshell, modifiers gotta modify — adjectives modify nouns and pronouns (brown bear), and adverbs modify verbs (runs quickly). Verbs are the heart of the sentence. No sentence is complete without one. Run! (That’s a complete sentence.) Prepositions show a relationship (under, over), and conjunctions (but, and) connect words and phrases. And dang, interjections (wow!) just want to have fun.

Definitions of part of speech
1

n one of the traditional categories of words intended to reflect their functions in a grammatical context

Synonyms:
form class, word class
Types:
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major form class
any of the major parts of speech of traditional grammar
noun
the word class that can serve as the subject or object of a verb, the object of a preposition, or in apposition
verb
the word class that serves as the predicate of a sentence
adjective
the word class that qualifies nouns
adverb
the word class that qualifies verbs or clauses
Type of:
grammatical category, syntactic category
(grammar) a category of words having the same grammatical properties

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