What part of speech is the word cool?

"Cool" can be several parts of speech, depending on how it's used:

* Adjective: Describing something that is pleasant, refreshing, or stylish. (Example: "The weather is cool today.")

* Interjection: Expressing approval or agreement. (Example: "Cool, I'll meet you there.")

* Verb: To become lower in temperature. (Example: "The soup needs to cool down.")

* Noun: A slang term for a person who is stylish, trendy, or attractive. (Example: "He's a real cool dude.")

The best way to determine its part of speech is to look at its function in a sentence.