Is the word kids an adjective?

No, "kids" is not an adjective. It's a noun, meaning children.

Here's why:

* Adjectives describe nouns. They tell us more about a noun. For example, "the big kids" - "big" is the adjective describing the noun "kids".

* "Kids" itself is the noun. It's the thing being described.

Let me know if you'd like to explore other parts of speech!