What is the general term used to describe parasites that live inside their hosts?

The general term used to describe parasites that live inside their hosts is "endoparasites." Endoparasites dwell within the body of their host organisms, often causing harm and deriving nutrients from them. Common examples of endoparasites include tapeworms, roundworms, and protozoa, all of which can impact the health of their hosts significantly. The opposite of endoparasites is "ectoparasites," which live on the external surfaces of their hosts, such as ticks and fleas. Understanding the distinction between these two types of parasites is crucial in fields like medicine and ecology, as they have different modes of transmission, life cycles, and effects on host organisms.