All wounds are injuries, but not all injuries are wounds. Medically speaking, a "wound" involves the skin or some other organ being cut or penetrated. In everyday usage, "wound" is also used to describe any non-fatal physical harm that was caused by a weapon or happened during a war.

A wound usually involves broken skin and blood even if you cut yourself while peeling a vegetable. An injury can be damage to a part of the body, for example a sprained ankle, that does not involve bleeding.

In summary, "wound" specifically refers to damage to body tissues, often involving the skin, while "injury" is a more general term that encompasses any kind of physical harm or damage to the body, including wounds.