The part of speech indicates how the word functions in meaning as well as grammatically within the sentence.
An individual word can function as more than one part of speech when used in different circumstances. Understanding parts of speech is essential for determining the correct definition of a word when using the dictionary.
There are nine parts of speech in the English language: noun, pronoun, verb, article, adjective, adverb, preposition, conjunction, and interjection.
Part of Speech in English | Video
Part of Speech in English | Image