Here's a breakdown:
* Noun: A word that names a person, place, thing, or idea (e.g., dog, park, table, happiness).
* Substitute: A word that stands in for a noun, such as a pronoun (e.g., he, she, it, they).
* Adjective: A word that describes or modifies a noun or substitute, providing more information about it (e.g., big, red, happy, noisy).
Example:
* The big red ball.
* "ball" is the noun
* "big" and "red" are adjectives modifying the noun "ball"