You wanna know what’s cool about language? It changes over time. So while the origin of a word may mean one thing, it can eventually mean something else as well or even something entirely different. Cool used to just mean temperature, but it eventually also came to refer to the attitude of a person or even how likable they are in common usage. Nimrod was a mythical hunter but thanks to Bugs Bunny and Elmer Fudd now means a stupid person. Same with “America” referring originally a set of continents. In common usage it has come to mean referencing the United States of America, mostly because people are lazy and is so much easier to say “American” than it is to describe something as “from the United States of America”. You can resist the change all you want, but eventually you sound like some old person that says automobile instead of car since car originally meant an individual portion of a train.