Here's why:
* Adjectives describe nouns: "Easy" describes a quality or characteristic of something, like a task or a problem.
* Nouns are things: They are the names of people, places, things, or ideas.
Examples:
* Adjective: The test was easy. (Describes the test)
* Noun: The test was a piece of cake. (Cake is the noun)
Let me know if you have any other words you want to check!