courage vs courageousness

courage and courageousness both are nouns.

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

As nouns, courage and courageousness are synonyms defined as:

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

Other synonyms of courage include braveness, bravery.

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