contusion vs. abrasion

contusion

noun

  1. 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

noun

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

    abrasions on his leg caused by falling on the gravel.

    Synonyms: , ,

  2. the act or process of abrading.

    Synonyms: ,