mistake vs renege

mistake and renege both are nouns.

Word	Noun	Adjective	Verb	Adverb
mistake	Yes	No	Yes	No
renege	Yes	No	Yes	No

As nouns, renege is a hyponym of mistake; that is, renege is a word with a more specific, narrower meaning than mistake:

mistake: a wrong action attributable to bad judgment or ignorance or inattention
renege: the mistake of not following suit when able to do so

mistake (noun)	renege (noun)
a wrong action attributable to bad judgment or ignorance or inattention	the mistake of not following suit when able to do so
an understanding of something that is not correct
part of a statement that is not correct

mistake (verb)	renege (verb)
to make a mistake or be incorrect	fail to fulfill a promise or obligation
identify incorrectly