injudiciousness vs foolishness

injudiciousness and foolishness both are nouns.

Word	Noun	Adjective	Verb	Adverb
injudiciousness	Yes	No	No	No
foolishness	Yes	No	No	No

As nouns, foolishness is a hypernym of injudiciousness; that is, foolishness is a word with a broader meaning than injudiciousness:

Other hypernyms of injudiciousness include folly, unwiseness.

injudiciousness (noun)	foolishness (noun)
the trait of being injudicious	a stupid mistake
lacking good judgment	the trait of acting stupidly or rashly
	the quality of being rash and foolish