They can be nouns. Usually they are adjectives.
Nouns are bravery, courage, or heroism. (Adjectives brave, courageous, heroic.) (Adverbs bravely, courageously, heroically)
Courageous, Brave Courageous, Brave Courageous, Brave
The word bravery is a noun. It is a brave act.
Somebody who is brave, and courageous yet gallant and generous in victory
synonym for courageous = brave antonym for courageous = cowardly
"Brave" and "courageous" are synonyms, whether they occur in the same sentence or not.
brave; more courageous would be braver
Brave
Nouns are bravery, courage, or heroism. (Adjectives brave, courageous, heroic.) (Adverbs bravely, courageously, heroically)
courageous
courageous
Brave or courageous.