The full name of the french Rabbi called Rashi was Rabbi Shlomo ben Yizchak. "Rashi" was an acronym derived from the full name. Rashi lived from 1040 to 1105 and was born and died in Troyes, France. He authored major commentaries on the Tanakh and Talmud.
It is because rabbi is a respectful name meaning teacher.
Because it's an acronym for his full name: Ashkenazi Rabbi Itzhak.
A priest in Hebrew is "cohen". So people named Cohen are descended from Jewish priests. A Cohen / Kohen is specifically a Jewish Priest ascended from Aaron.
No, unless you are using it as part of a title like a story called "The Rabbi and the Bear", or in a persons name like Rabbi John Friedman.
rashi's real name is shlomo yitzchaki
The name of "teacher" is rabbi for Jews.
A practitioner of Judaism is called a Jew. A Jewish religious authority is called a rabbi.
You may address then as Rabbi, or just use their name; both are acceptable.
Rabbi Myers's birth name is Isadore Myers.
There is no special word for the home of a Rabbi.
Shimona Rashi
Rabbi Shergill's birth name is Gurpreet Singh Gill.