What is the Difference Between Similar But Different Things, Terms, and Objects

What is the Difference between Muscle Cells, Skeletal Traction, Skin and Flesh

Human body comprises of lots of organs that really form a complex body system. This is the reason that medical science separates the study of every individual organ of human body on behalf of its structure and function. Muscle Cells, Skeletal Traction, Skin and Flesh are the name of different human body parts.