What is the present participle of the verb finish?

Yes, the Word finish is a noun (finish, finishes) and a verb (finish, finishes, finished, finishing). The Word finish is also used as an adjective.

The noun 'finish' is a Word for the conclusion of something; a Word for the surface treatment of an object; a Word for the end point of a race; a Word for a thing.

The noun forms of the verb to finish are finisher and the gerund, finishing.