The term Quadrumana refers to a group of primates that includes monkeys, apes, and lemurs. However, there are several synonyms for Quadrumana, depending on the context of use. One common alternative is the word "simians," which is often used in scientific literature to refer to non-human primates. Another synonym is "anthropoids," which describes primates that are more closely related to humans than to other animals. A more specific term is "plathyrrhines" which refers to New World monkeys, while "catarrhines" is used for Old World monkeys and apes. Regardless of the synonym used, the Quadrumana are a fascinating group of animals that continue to capture our attention and curiosity.