Verb: It describes an action, like in these examples:
* She drives a red car.
* He drives to work every day.
Noun: It refers to a specific type of path or road used for driving, usually a long one, like in these examples:
* We took a scenic drive along the coast.
* The drive was long and tiring.
To determine which part of speech "drives" is, you need to look at how it's used in the sentence.