| noun | a word that names a person, place, thing, etc. |
| verb | a word that expresses action, existence, or occurrence |
| adjective | a word that modifies a noun, as by color, size, location, etc. |
| adverb | a word that qualifies a verb, adjective, or other adverb, as to define time, place, manner, degree, etc. |
| pronoun | a designation that substitutes for a noun |
| conjunction | a word that connects other words, phrases, or clauses |
| interjection | a word or phrase used in exclamation; a cry or inarticulate utterance expressing an emotion |
| preposition | a word that shows the relationship of a noun or a pronoun to another word in a sentence |
| homonym | a word that sounds like another, but that differs in meaning and often spelling |