As nouns the difference between kindness and bravery
is that kindness is the state of being kind while bravery is (usually|uncountable) being brave, courageousness.
kindness
English
Noun
The state of being kind.
An instance of kind or charitable behaviour.
bravery
English
Noun
(en-noun)
(usually, uncountable) Being brave, courageousness.
(countable) A brave act.
Synonyms
* (being brave) bravehood, braveness, courageousness, fearlessness; courage, pluck, valor; see also