Salve
I know, LOL, it is funny.
As in my language, you go from one City to other City or country side, and dialect changes.
Just normal life.
Merci
I find the same dialect issues in German and Welsh. My German customers could tell I learned German from a teacher in Karlruhe. Most of my Welsh experience is via music from the mid-valleys. I did that on purpose as that is where my family originated. The northern and southern dialects differ from the mid-valleys. Differences are more pronounced in colloquial usage. The formal, modern written form of Welsh is pretty standard...but nobody speaks in that manner.