What part of speech is the word partner?

The word "partner" can be several parts of speech depending on how it's used in a sentence:

* Noun: A person who shares in an activity, business, or relationship.

* "My business partner is very experienced."

* Verb: To be a partner with someone.

* "We partnered on a new project."

* Adjective: Relating to a partnership.

* "They signed a partner agreement."

Let me know if you have a specific sentence in mind and I can tell you which part of speech "partner" is acting as!