So is Chapstick and others. You use context clues. If someone asks for a coke, they get a Coca-Cola (or are queried for an alternative if not available). But if

So is Chapstick and others. You use context clues. If someone asks for a coke, they get a Coca-Cola (or are queried for an alternative if not available). But if one drank a Sprite in the morning and was asked what they drank, they might say coke.