Counterfeit goods; knock-offs — items made to imitate genuine branded products, often of inferior quality and potentially infringing on trademarks or copyrights.
市場で模倣品を見分けるのは時に難しい。
Sometimes it's difficult to distinguish counterfeit goods at the market.
あのバッグは模倣品で、本物のブランドではない。
That bag is a knock-off; it's not the genuine brand.
模倣品の販売は法律上の問題になることがある。
Selling counterfeit goods can lead to legal problems.