tubercle vs lesion

tubercle and lesion both are nouns.

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

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

tubercle (noun)	lesion (noun)
a protuberance on a bone especially for attachment of a muscle or ligament	any localized abnormal structural change in a bodily part
small rounded wartlike protuberance on a plant	an injury to living tissue (especially an injury involving a cut or break in the skin)
a swelling that is the characteristic lesion of tuberculosis