What part of speech is the word roundup?

The word "roundup" can be a noun or a verb, depending on how it's used in a sentence.

Noun: A roundup is a gathering or collection of people or things.

*Example:* "The police conducted a roundup of suspects."

Verb: To roundup means to gather or collect people or things.

*Example:* "We're going to roundup the cattle before the storm hits."