I am extremely happy and satisfied to learn the parts of speech. It is like going back to basics.
I, it - pronoun
Am, is, going - verb
Extremely - adverb
And - conjuction
Of, to - preposition
Noun names a person, place, thing or idea, while Pronoun takes the Noun's place. Verb is an action word. The adjective describes a noun or pronoun while the adverb describes a verb, adjective or another adverb. The preposition shows a relationship of place, time, location or direction between words while conjuctions connect words, phrases and clauses. Lastly, an interjection tells emotions.