Noun: Represents a person, place, thing, or idea. Examples: "dog," "city," "book," "happiness"
Pronoun: Replaces a noun or another pronoun. Examples: "he," "she," "it," "they"
Verb: Expresses action, occurrence, or state of being. Examples: "run," "eat," "jump," "is"
Adjective: Describes or modifies a noun or pronoun. Examples: "big," "blue," "happy," "beautiful"
Adverb: Modifies a verb, adjective, or other adverb, providing information about manner, place, time, frequency, degree, or circumstance. Examples: "quickly," "happily," "very," "often"
Preposition: Shows the relationship between a noun (or pronoun) and other words in a sentence. Examples: "on," "in," "at," "under"
