Counterfeit goods: items made to imitate genuine products, often illegally manufactured or sold.
空港で大量の偽造品が押収された。
A large quantity of counterfeit goods was seized at the airport.
有名ブランドの偽造品をネットで買うのは避けた方がいい。
You should avoid buying counterfeit branded goods online.
偽造品の販売は多くの国で法律違反となる。
Selling counterfeit goods is illegal in many countries.