Some words just get lost. The old WWI song with the line "While you've a lucifer to light your fag" was sung in America for many years after the war. As the people of that time died off, the words were no longer used and fag came to mean homosexual. Now the word in that usage is politically incorrect.
The British use career, Americans use careen (screeching around corners, etc.). Both, however, are English in origin. The 19thC English poet, said of Lucifer: "Now his huge bulk o'er Afric's sands careened, Now the black planet shadowed Arctic snows." This usage prevailed in America but not in Britain. Both Americans and British also use careen in the sense of tipping a boat to work on the hull. Career refers only to work in the States.
Biscuit and cookie cause confusion, as do pavement, boulevard and sidewalk.
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