bravery

As a noun bravery

is (usually|uncountable) being brave, courageousness.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As nouns the difference between bravery and optimism

is that bravery is (usually|uncountable) being brave, courageousness while optimism is a tendency to expect the best, or at least, a favourable outcome.

As nouns the difference between bravery and loyalty

is that bravery is (usually|uncountable) being brave, courageousness while loyalty is the state of being loyal; fidelity.

As nouns the difference between bravery and null

is that bravery is (usually|uncountable) being brave, courageousness while null is zero, nil; the cardinal number before einn.

As nouns the difference between bravery and insanity

is that bravery is (usually|uncountable) being brave, courageousness while insanity is the state of being insane; madness.

As a noun bravery

is (usually|uncountable) being brave, courageousness.

As an adjective undefined is

lacking a definition or value.

Endurance is a related term of bravery.

As nouns the difference between endurance and bravery

is that endurance is the measure of a person's stamina or persistence while bravery is (usually|uncountable) being brave, courageousness.

As nouns the difference between bravery and devotion

is that bravery is being brave, courageousness while devotion is the act or state of devoting or being devoted.

As nouns the difference between bravery and idiocy

is that bravery is (usually|uncountable) being brave, courageousness while idiocy is (psychology) the state or condition of being an idiot; the quality of having an intelligence level far below average; mental retardation.

As nouns the difference between bravery and rashness

is that bravery is (usually|uncountable) being brave, courageousness while rashness is the quality of state of being rash; inconsiderate or presumptuous haste; headstrong precipitation in decision or action; temerity; unwarranted boldness.