discernment vs gumption

discernment and gumption both are nouns.

Word	Noun	Adjective	Verb	Adverb
discernment	Yes	No	No	No
gumption	Yes	No	No	No

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

discernment: the mental ability to understand and discriminate between relations
gumption: sound practical judgment

discernment (noun)	gumption (noun)
the trait of judging wisely and objectively	fortitude and determination
the mental ability to understand and discriminate between relations	sound practical judgment
the cognitive condition of someone who understands
perception of that which is obscure
delicate discrimination (especially of esthetic values)