I apologize for how this question may be perceived. I am casually learning linguistics with no curriculum. I can understand that this question may have many possible answers, but I am not quite sure how else to ask this question. I can also understand if all that may be provided to me is some resource on lists of natural ways languages evolve.
Basically, I've come up with two place names, "Yallet" and "Helverly". I'm trying to create enough of a naming language that would allow me to create names that seem to occur naturally in the setting.
Both Yallet and Helverly are locations, and so I was wondering if there was a way for the root "let", meaning town, to conceivably evolve to "ly".
Can this evolution happen naturally? If so, I would happily read on such transformations. If not, I would be very appreciative of an explanation as to why it would not be a natural evolution.