An exact imitation of anything — a work of art, a ten dollar bill — is a counterfeit [подделка, фальшивка], and the act of creating the fake copy is the verb to counterfeit [фальсифицировать]
An exact imitation of anything — a work of art, a ten dollar bill — is a counterfeit [подделка, фальшивка], and the act of creating the fake copy is the verb to counterfeit [фальсифицировать]