What's the difference between bravery and valiance?

Bravery

Definition:

(n.) The quality of being brave; fearless; intrepidity.
(n.) The act of braving; defiance; bravado.
(n.) Splendor; magnificence; showy appearance; ostentation; fine dress.
(n.) A showy person; a fine gentleman; a beau.

Example Sentences:

(1) I am dismayed at the terrible experience that Wafula Strike had … She is right to bring this matter to the department’s attention and I applaud her bravery for speaking openly about her experience.” The Paralympian condemned Stapleton’s experience: “It’s a real shame that what happened to me is still happening to other people.
(2) The charity's chief executive, Javed Khan, said: "Victims of sexual abuse should be praised for their bravery in coming forward, not censured and have their credibility called into question – least of all by the prosecution."
(3) "I admire their bravery but I don't see why we are involved in their war.
(4) The police are our front line against people who wish to do us harm and it is exactly this type of bravery and dedication shown by these officers that will continue to keep our communities safe and secure.” Keenan said the public should feel confident that the police, the security services and the government were “taking every possible step to ensure their safety and the security of all our communities” and should “remain calm and let the authorities get on with their job”.
(5) We are very grateful for the witnesses’ participation, and Dame Linda and Dame Janet were at pains to recognise their bravery in the reports.
(6) An era of turbulence, back-stabbing, bravery and brilliance, I knew I wanted it to form the basis for a conspiracy thread in the story.
(7) Westminster attack: Theresa May praises 'exceptional bravery' of police and security services - live Read more The Guardian understands the initial working theories of the police investigation are the attacker was inspired by Isis and was most likely a “lone actor”.
(8) A behavioral modeling and reinforcement procedure for "bravery training" is presented for assisting young children to cope with fears encountered in a hospital setting.
(9) Mandelson has been careful in recent days to praise Miliband for earning a hearing over his bravery in taking on Rupert Murdoch, but said he had not yet replaced New Labour with anything coherent.
(10) Ed Miliband said: "This is a tragic and poignant reminder of the sacrifices made by our armed forces in serving our country with bravery and distinction."
(11) The atmosphere and the spirit of enthusiasm and dedication is described, as well as the faith, the bravery and the self abnegation with which the Greek soldiers fought in the Albanian mountains and the Greek nurses in their own battle field, in the health care Army establishments for the treatment and relief of the brave wounded and sick warriors.
(12) "The absolute key is that at the moment we have extraordinary bravery, as well as sacrifice, intelligence and skill, from British service people and that is tactically making advances, but what is missing is a clear strategy," he told the BBC Radio 4 Today programme.
(13) Last Friday, Buhari was in Yola to decorate soldiers for bravery in the counter-insurgency and to visit a camp for people displaced by six years of violence that has resulted in at least 17,000 deaths.
(14) The First World War lives on in the passionate poetry it produced, in the plays, novels and chronicles of bravery, loneliness and despair.
(15) "I want to praise the bravery of the bus driver who had to deal with this frightening situation," the Ulster Unionist member said.
(16) It needed stamina, ice-in-the-veins bravery, cunning, cool judgment and brute determination.
(17) Their bravery, dedication and professionalism are second to none."
(18) Neave thanked the woman for her testimony, and for her bravery.
(19) Last month the opening of a museum in Markowa commemorating the bravery of the Ulma family in saving their Jewish neighbours was fast-tracked.
(20) "I admire her for her bravery and courage," said Amir Shakoor in a post.