仿冒品 (fǎngmào pǐn): This term refers to imitation goods that closely resemble the original product but do not claim to be authentic.
伪劣商品 (wěiliè shāngpǐn): This term refers to inferior or substandard goods that are falsely labeled as high-quality products.
盗版 (dàobǎn): This term refers specifically to pirated copies of copyrighted material, such as movies, music, or software.