::: Yes, it clarifies your error.  While it is true that meaning and etymology can diverge, as when a word changes meaning over a period of time, you have not given any evidence that the word "Yerushalayim" changed meaning.  It has only one meaning today, namely the city.  If that wasn't true, you would be able to show us examples of its use to mean "Abode of Peace" in a context that is not a reference or allusion to the city.  You can't do that, because such usage does not exist.  What does exist is a popular belief that "Abode/City of Peace" is the etymology of "Yerushalayim", and that is what people mean when they say that "Yerushalayim" means "Abode of Peace". If you convince them that it comes from the name of a god, they will admit it doesn't mean "Abode of Peace" as they thought.  Your idea of an actual meaning change is quite idiosyncratic and you have not brought a single source in support of it.  As such, it is Original Research and inadmissible.