Nouns (Teacher, Robert, John, College, California, English, Monday, December)
Prounouns (He, it, she, the)
Adjectives (Intelligent, smart, clever)
Adverbs (frenquently, more modern, bigger, bigest, happier)
Prepositions (on, in, to)
conjunctions (and, for, unless, nor, either)
Interjections (woh, oops, aw, uh)
Articles (a, an, the)