Pronoun: Pronouns are words used to replace nouns to avoid repetition. Common pronouns include "he," "she," "it," "they," and "you."

Verb: A verb is a word that expresses an action or a state of being. For example, "run," "is," "sing," and "eat" are verbs.

Adjective: An adjective is a word that describes or modifies a noun. Words like "red," "tall," "happy," and "delicious" are adjectives.

Adverb: Adverbs modify verbs, adjectives, or other adverbs to provide more information about how, when, where, or to what extent something happens. Examples include "quickly," "very," "often," and "here."

Preposition: Prepositions show the relationship between nouns or pronouns and other words in a sentence. Common prepositions include "in," "on," "under," "between," and "with."

Conjunction: Conjunctions are used to connect words, phrases, or clauses. Common conjunctions include "and," "but," "or," "because," and "although."

Interjection: Interjections are short, often exclamatory words or phrases that express strong emotions or sudden exclamations. Examples include "Wow," "Ouch," "Oh," and "Hooray."

Article or Determiner: This category includes articles ("a," "an," "the"), demonstratives ("this," "that"), possessive adjectives ("my," "your"), and other words that help specify nouns.