What part of speech is thanks?

"Thanks" can be a few different parts of speech, depending on how it's used:

* Interjection: This is the most common usage, expressing gratitude. Example: "Thanks for the help!"

* Noun: This is less common, but it can be used as a noun meaning "gratitude". Example: "She expressed her thanks for the gift."

* Verb: While rare, it can act as a verb meaning "to thank." Example: "I thanks you for your service." (This usage is often considered informal.)

Let me know if you have another word you'd like to explore!