What part of speech would the word scream be?

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

* Verb: This is the most common use. "She screamed in terror."

* Noun: "The scream echoed through the forest."

* Interjection: "Scream!" (Used to express sudden or intense emotion)

Let me know if you'd like some examples to illustrate these uses!