differentiate (someone or something) from (someone or something else)
1. to recognize the difference between people and things; to tell the difference between people and things. How do you differentiate this one from that one? Can you differentiate Bill from Bob?
2. to make people and things different. I will differentiate this one from that one by painting this one red. The twins' mother used different-colored clothing to differentiate Bill from Bob.
See also: differentiate