Ape vs. Monkey

Historically, there has been debate in and out of science over what qualifies as an "ape" and what qualifies as a "monkey." The two words have different language origins, but they have often been used interchangeably in translations and popular culture. Even past versions of academic resources, like the 1910 edition of Encyclopaedia Britannica, have indicated that "ape" and "monkey" are synonymous.