Part of Speech is used to effectively deliver a message in English language.
here are the 8 Parts of Speech:
Noun: name of a place, thing, or person
ex: School, Do, Anna
Pronoun: substitution to noun
ex: He, She, It
Verb: an action or state
ex: run, sleep, write
Adverb: describe a verb, adjectives, or another adverb
ex: speechless
Adjectives: describes a noun
ex: beautiful, quickly, fast
Preposition: gives connection to phrases
ex: in, on, at
Conjunction: connect words or sentences
ex: for, and, because
Interjection: gives a strong feeling and emotion
ex: ouch!, ohh, hmph