lookalike

noun3

1. •
   Someone who, or something which, physically resembles (looks like) another.
2. •
   A doppelganger, impersonator, imposter, or body double.

   • The cousins were such close lookalikes they could impersonate each other, and sometimes did.
3. •
   Something that looks very similar to or the same as the genuine article.

   • Among competing products, a generic substitute is one thing, whereas a deceptive lookalike is another.