1. Noun: Refers to a person, place, thing, or idea
2. Pronoun: Replaces a noun in a sentence
3. Verb: Describes an action or state
4. Adjective: Describes a noun or pronoun
5. Adverb: Describes a verb, adjective, or adverb
6. Preposition: Shows relationships between words
7. Conjunction: Connects words, phrases, or clauses
8. Interjection: Expresses strong emotion
9. Article: Specifies a noun as specific or general