What part of speech is the word talk?

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

* Verb: When it describes an action, like "They talked for hours."

* Noun: When it refers to the act of speaking, like "Their talk was fascinating."

* Adjective: When it describes something related to speaking, like "a talk show."

Let me know the sentence you're interested in, and I can tell you specifically which part of speech "talk" is in that case.