Injure vs. Wound

injure [T ]
to harm yourself or sb else physically, especially in an accident

He injured his knee playing hockey. Three people were killed and five injured in the crash. She injured herself during training.

wound [T, often passive] (rather formal)

to injure part of the body, especially by making a hole in the skin using a weapon
He was wounded in the arm.
About 50 people were seriously wounded in the attack.
Wound is often used to talk about people being hurt in war or in other attacks which affect a lot of people.

Oxford Learner’s Thesaurus © Oxford University Press, 2008.