* Noun: This is the most common use. It refers to the act of gathering crops or the crops themselves.
* Example: "The harvest was plentiful this year."
* Verb: It can also mean to gather crops.
* Example: "They are harvesting the wheat."
* Adjective: Less common, but it can describe something related to harvesting.
* Example: "The harvest moon is beautiful."
So, without a sentence to provide context, it's impossible to say definitively which part of speech it is.