Is the underlined word a participle or verb?

The (swimming) pool was busy all day long.

i know its a present participle but i i consider it a verb or just select participle?

Question

Is the underlined word a participle or verb? 
 
The (swimming) pool was busy all day long. 
 
i know its a present participle but i i consider it a verb or just select participle?

tennistar · Answer

Well, a verb is a word that describes an action or occurrence. Obviously, swimming is an action. A participle is a word formed from a verb, like going or been. So, you should consider it a verb.

wwhitlock · Answer

Is the pool swimming? The word does not show action here.
The verb in this sentence is was.
Swimming is describing the kind of pool.