Difference between Gallantry and Valour

GALLANTRY vs VALOUR: NOUN

Polite attentiveness to women
Courtesy towards women
Nobility of spirit or action; courage.
Chivalrous attention toward women; courtliness.
The act or an instance of gallant speech or behavior.
A bold or stylish appearance.
1. Fine appearance; show; finery; splendor; magnificence.
Heroic bearing; bravery; intrepidity; high spirit: as, the gallantry of the troops under fire was admirable.
Courtliness or polite attention to ladies.
In a sinister sense, equivocal attention to women; profligate intrigue.
Gallants collectively.
Splendor of appearance; ostentatious finery.
Bravery; intrepidity.
Civility or polite attention to ladies; in a bad sense, attention or courtesy designed to win criminal favors from a female; freedom of principle or practice with respect to female virtue; intrigue.
Gallant persons, collectively.
Courage
Chivalrous courtliness, especially towards women
An instance of gallant behaviour or speech
The qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle)

The qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle)
Value; worth.
Strength of mind in regard to danger; that quality which enables a person to encounter danger with firmness; personal bravery; courage; prowess; intrepidity.
A brave man; a man of valor.
Arrogance

Selflessness, Braveness, Gallant, Commendation, Intrepidity, Courage, Bravery, Valiancy, Valorousness, Politesse, Valour, Valiance, Chivalry, Heroism, Valor

Invalorous, Gallant, Value, Nerve, Prowess, Fortitude, Courageous, Courage, Bravery, Valorousness, Valiancy, Valiance, Heroism, Gallantry, Valor

Medal, Cowardice, Patriotism, Corporal, Braveness, Gallant, Commendation, Courage, Bravery, Valorousness, Politesse, Valour, Valiance, Chivalry, Valor

Heroicness, Impavid, Gallantness, Invalorous, Gallant, Value, Nerve, Prowess, Fortitude, Courageous, Courage, Bravery, Valorousness, Valiance, Valor

She was pleased by this little piece of gallantry.
Too much praise cannot be awarded for their gallantry.
Note the Warrant Officer promoted for gallantry in Egypt.
SYN: Bravery, valor, gallantry, might, courage, intrepidity, fearlessness, heroism.
Custer was later cited for gallantry during that action.
I'm sure your lady would appreciate such gallantry.
Vietnamese Gallantry Cross for his service in Vietnam.
Dicken Medal of Gallantry was awarded under fire.
To graceful dulness the unequal field Of gallantry?
The Medal for Gallantry shall be awarded only for acts of gallantry in action in hazardous circumstances.