What part of speech is the word pop?

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

* Verb: To make a sudden, sharp sound. (Example: The champagne cork popped.)

* Noun: A type of popular music. (Example: I love listening to pop music.)

* Noun: A fizzy, sweet carbonated drink. (Example: I'll have a can of pop, please.)

* Interjection: An exclamation of surprise or excitement. (Example: Pop! Goes the weasel.)

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