Chimpanzees are a species of APE, closely related to humans, and are the most intelligent of all non-human primates. They are also known as 'monkeys' due to their physical similarities to other primates, such as their long arms and curved fingers. The term 'Jocko' is often used to refer to chimpanzees, particularly males, due to their strong and muscular build. Finally, the term 'APE' is used to refer to any primate that is not a human, and chimpanzees are one of the most well-known species of APE.