Parts of speech are words that describe the function of the other words in a sentence.There are 8 parts of speech in english ie noun, verb, pronoun, adverb, adjective, conjunction, interjection, preposition.
They all have specified functions they perform in a sentence.
For example, Ama is a really beautiful and respectful girl.
Ama - Noun
is - verb
really - adverb
beautiful, respectful - adjective