Why did you even ask that?
The difference between Coke and Coca Cola is marketing and perception.
Coke is cool, refreshing, invigorating and in vogue.
Cola is absolutely the same.
Marketing and perception.
There is no difference it's just the same thing made by a different company.
Depends on where you are from. In some areas a coke is all pops/sodas. While Coca Cola is a specific type of coke.
Coke is a Coke.
Coca-Cola is a fine, fizzy beverage.
But "Co-Cola" is Southern Alabama. Riding up to the Chevron with Grandaddy, in his old beat up, Brandy Wine Chevrolet, to get a Brothers Pizza and a "Co-Cola".
That one scene from Scarface would've been weird. "Say hello ro my little crazt straw"?