1. Nouns: Words that name people, places, things, or ideas (e.g., dog, house, love).
2. Pronouns: Words that replace nouns (e.g., he, she, it, they).
3. Verbs: Words that describe actions or states of being (e.g., run, sleep, exist).
4. Adjectives: Words that describe nouns or pronouns (e.g., big, red, happy).
5. Adverbs: Words that describe verbs, adjectives, or other adverbs (e.g., quickly, very, extremely).
6. Prepositions: Words that show the relationship between a noun or pronoun and another word in the sentence (e.g., on, in, at, to).
7. Conjunctions: Words that connect words, phrases, or clauses (e.g., and, but, or, so).
8. Interjections: Words that express strong emotion (e.g., Wow! Ouch! Oh!).
9. Determiners: Words that specify which noun is being referred to (e.g., the, a, this, that).
It's important to note that some words can function as multiple parts of speech depending on their context. For example, the word "run" can be a verb ("They run fast") or a noun ("We went for a run").
Additionally, there are other categories of words beyond these nine, such as:
* Articles: "The," "a," and "an" are considered articles, which are a subset of determiners.
* Numerals: Words representing numbers (e.g., one, two, three).
* Auxiliary Verbs: Helping verbs such as "have," "be," and "do."
The specific categorization of words often depends on the grammatical framework being used.