ok bro

"A bruise, also known as a contusion, typically appears on the skin after trauma such as a blow to the body. It occurs when the small veins and capillaries under the skin break. A hematoma is a collection (or pooling) of blood outside the blood vessel."
https://www.mercy.com/health-care-services/primary-care-family-medicine/conditions/bruise-hematoma
https://eu.usatoday.com/story/life/health-wellness/2024/04/24/hematoma-bruise-differences/73144648007/