What's the difference between an 'injury' and a 'wound'?

First, try this question: Is a wound a type of injury or
is an injury a type of wound?
Answer: a wound is a type of injury.

An injury is any damage done to a person's body.
It could be because of an accident, a fight, etc.
"He is suffering from a back injury" "She was injured in a fire"

A wound is an injury caused by a weapon, such as a knife or gun.
"The patient has a bullet wound in his chest" "He has a deep knife wound"

By the way, 'injury' and 'wound' are both difficult to pronounce.
They sound like 'Inchery' and 'wooned'