Is the word verb or noun?

The word "verb" can be both a noun and an adjective, but it's primarily a noun.

Noun: "Verb" refers to the word class that expresses action, state of being, or occurrence.

Example: "She likes to read verbs."

Adjective: "Verb" can describe something related to verbs.

Example: "The verb tense in this sentence is wrong."

So, while the word "verb" itself is a noun, it can also be used to describe other things.