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Luna is the Latin word for moon. It’s not the official name in English. It’s just called “Moon” in English, just like the sun is just called “Sun” despite being many other words in other languages.
Because there is just one of them it’s not really necessary to give it a unique name, but there are lots of options in Latin, Greek and other languages if you want to get fancy.
You are not making sense here. Please try to clarify your point because it seems to be disconnected from the comment you are responding to.