1. Noun: This is the most common use. It refers to a person or thing belonging to a group or organization.
* Example: "She is a member of the tennis club."
2. Adjective: It can describe something as being a part of a group.
* Example: "The member states of the European Union."
3. Verb: Less common, but it can mean to become a member of something.
* Example: "She will member the committee next month." (Though this usage is rather archaic and uncommon)
4. Sometimes it's part of a compound word: For example, "member-only" (adjective) or "membership" (noun).
So, the part of speech for "member" depends on how it's used in a sentence.