Robert lives in a small apartment in California - Noun
He teaches college courses- Pronoun
His black cat only eats expensive food- Adjective
His wife works as a teacher , too she loves her job - Verb
They always go to work together this is very useful- Adverb
The ball is on the table - Preposition
Robert and his wife are happy together- Conjunctions
Wow, we won the game - Interjunction