discreetness vs sagaciousness

discreetness and sagaciousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
discreetness	Yes	No	No	No
sagaciousness	Yes	No	No	No

As nouns, sagaciousness is a hypernym of discreetness; that is, sagaciousness is a word with a broader meaning than discreetness:

discreetness: knowing how to avoid embarrassment or distress
sagaciousness: the mental ability to understand and discriminate between relations

Other hypernyms of discreetness include discernment, judgement, judgment, sagacity.

discreetness (noun)	sagaciousness (noun)
subtly skillful handling of a situation	the trait of forming opinions by distinguishing and evaluating
knowing how to avoid embarrassment or distress	the mental ability to understand and discriminate between relations