Cuba Libre VS Rum&Coke

I discovered something recently and I feel really silly. I used to think that the Cuba Libre cocktail was just a Rum and Coke with a fancier name. They even have the same Wikipedia entry. Well, not quite. There is a difference: the Cuba Libre has to have lime in it, from what I understand either a slice or a bit of its juice. So a Rum and Coke is not a full on Cuba Libre, in fact it is the Coba Libre's poorer brother. I feel like such a Philistine. I seldom order cocktails, last time I ordered a Rum and Coke was in 2018. Probably because there was no beer I liked at the pub. So anyway, next time I will make sure I order the right thing and say a Cuba Libre.