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contusion vs. abrasion

contusion

[kuhn-too-zhuhn, -tyoo-] / kənˈtu ʒən, -ˈtju- /

noun

an injury, as from a blow with a blunt instrument, in which the subsurface tissue is injured but the skin is not broken; bruise.

abrasion

[uh-brey-zhuhn] / əˈbreɪ ʒən /

noun

a scraped spot or area; the result of rubbing or abrading.

abrasions on his leg caused by falling on the gravel.

Synonyms:

lesion, scrape, sore
the act or process of abrading.

Synonyms:

erosion, rubbing