Apes vs Monkeys
Many people believe that apes--chimpanzees, gibbons, gorillas, and orangutans--are monkeys. But monkeys and apes differ in several ways. For example, apes are more intelligent than monkeys. Most monkeys have a tail, but none of the apes do. Monkeys are smaller than most apes. Apes are expert climbers. Monkeys generally run, jump, and leap among tree branches.
-From World Book Encyclopedia
