dauntlessness vs courageousness

dauntlessness and courageousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
dauntlessness	Yes	No	No	No
courageousness	Yes	No	No	No

As nouns, courageousness is a hypernym of dauntlessness; that is, courageousness is a word with a broader meaning than dauntlessness:

dauntlessness: resolute courageousness
courageousness: a quality of spirit that enables you to face danger or pain without showing fear

Other hypernyms of dauntlessness include braveness, bravery, courage.

dauntlessness (noun)	courageousness (noun)
resolute courageousness	a quality of spirit that enables you to face danger or pain without showing fear