1. Noun refers to a name of a person, place, etc.
David, London
2. Pronoun takes a nouns place
He, It
3. Adjective describes a noun or pronoun
Beautiful, Tall
4. Verb is an action word
Cook, Read
5. Adverb describes a verb, adjective or adverb
Slowly, Quickly
6. Preposition show a relationship of place, time, location, or direction between words.
At, Under
7. Conjunction connects words or phrases
For, And
8. Interjection tells an emotion or surprise
Wow! , Ouch