1. Nouns
Definition: Words that name a person, place, thing, or idea.
Examples: dog, teacher, happiness, London.
Types: Common nouns, proper nouns, abstract nouns, concrete nouns, collective nouns.
2. Pronouns
Definition: Words used in place of nouns to avoid repetition.
Examples: he, she, it, they, who, which.
Types: Personal, possessive, reflexive, demonstrative, interrogative, relative, indefinite.
3. Verbs
Definition: Words that show action or state of being.
Examples: run, think, is, are, was.
Types: Action verbs, linking verbs, auxiliary verbs (helping verbs), modal verbs.
4. Adjectives
Definition: Words that describe or modify nouns or pronouns.
Examples: beautiful, tall, red, three.
Types: Descriptive, quantitative, demonstrative, possessive, interrogative.
5. Adverbs
Definition: Words that modify verbs, adjectives, or other adverbs. They often tell how, when, where, or to what extent.
Examples: quickly, yesterday, very, outside.
Types: Manner, time, place, degree, frequency.
6. Prepositions
Definition: Words that show the relationship between a noun (or pronoun) and other words in a sentence.
Examples: in, on, at, by, with, about.
Usage: They often show location, direction, time, or cause.
7. Conjunctions
Definition: Words that join words, phrases, or clauses.
Examples: and, but, or, so, because.
Types: Coordinating, subordinating, correlative.
8. Interjections
Definition: Words or phrases that express emotion or exclamation. They are often followed by exclamation marks.
Examples: Wow! Oh! Alas!
9. Articles (a subtype of Determiners)
Definition: Words used to specify nouns.
Types: Definite (the) and indefinite (a, an).