1- My brother is a teacher. (noun)
2- The cat is cute. (adjective)
3- He is a teacher. (pronoun)
4- Andrew walks to work. (verb)
5- They walk fast. (adverb)
6- Robert and Craig are friends. (conjunction)
7- Robert works at the local community college. (preposition)
8- Ouch! That hurts! (interjection)