The meanings of these words are essentially the same – they mean facing danger,
difficulty, or fear with calm or confidence.
Just make sure not to get confused between their noun and adjective forms:
▶️ A fireman saved a child from the burning house.
He was very brave. / He was very courageous.
He was very courage.
With forms of the verb “to be” (is, are, was, were, being, been), use
brave/courageous. With the word “the” and with possessives (my, your, his, her,
our, their) use bravery/courage.
▶️ I admire the bravery of firemen.
▶️ I admire the courage of firemen.
▶️ Their brave bravery in the face of danger is inspiring.
▶️ Their courage in the face of danger is inspiring.