Was writing a post earlier today and couldn't decide if I wanted to spell it "Armor" or "Armour". Decided to go with Armor after realizing it's less key to press

How do you spell it?
Armor vs. armour
Armor is the American spelling of the noun meaning a protective covering. Armour is the preferred spelling in all the other main varieties of English. Other than the spelling, there is no difference between the words.