abrasion vs lesion

abrasion and lesion both are nouns.

Word	Noun	Adjective	Verb	Adverb
abrasion	Yes	No	No	No
lesion	Yes	No	No	No

As nouns, lesion is a hypernym of abrasion; that is, lesion is a word with a broader meaning than abrasion:

abrasion: an abraded area where the skin is torn or worn off
lesion: an injury to living tissue (especially an injury involving a cut or break in the skin)

Other hypernyms of abrasion include wound.

abrasion (noun)	lesion (noun)
the wearing down of rock particles by friction due to water or wind or ice	any localized abnormal structural change in a bodily part
erosion by friction	an injury to living tissue (especially an injury involving a cut or break in the skin)
an abraded area where the skin is torn or worn off