laceration vs lesion

laceration and lesion both are nouns.

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

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

laceration: a torn ragged wound
lesion: an injury to living tissue (especially an injury involving a cut or break in the skin)

Other hypernyms of laceration include wound.

laceration (noun)	lesion (noun)
the act of lacerating	any localized abnormal structural change in a bodily part
a torn ragged wound	an injury to living tissue (especially an injury involving a cut or break in the skin)