Class Trematoda: Infect the internal organs of hosts. Parasitic Can be endoparasites (live in the host) or ectoparasites (attach to external surfaces of the host. Size: ~ 1 cm to 10 cm Covered in an unciliated cuticle. Usually require 2 hosts to complete it's life cycle.
The difference between a mole and a wart is that moles are not contagious, but warts are. A mole, or nevus, is a collection of skin pigment cells. When they are small, they look like small brown dots. When the collection is larger, and slightly deeper, it can cause a raised skin colored bump over it.
Difference Between Skin Tags and Warts. Skin tags and warts may appear the same to the untrained eye. Even doctors with minimal experience may misdiagnose these two conditions. It is very common to receive plenty of advice from friends and family about the diseases we may have. Combine this with a misdiagnosis, you get total panic.