??? ???? ???? ??? ????? ???? ???? ??? ???? ?? ??? ???? ?? ?????
Why the Difference and what is the difference between them?
The where saved on two levels hence the use of two languages. One is the actual Golus living in a strange land, and the second is the working of the Jews as slaves.This like the Posuk says:
?? ?? ???? ???? ???? ?? ???, ?????? ???? ????
That is first you will be strangers in a strange land and then and only then,you will suffer as a slave.
But Moshe and Aharon who were from the Shevet Levi who only had one aspect of this Golus the Strangers in a strange land, and not the slavery, so Moshe and Aharon it says “??? ???? ???? ??? ?????” as you where saved from the Hands of Mitzrayim meaning the Slavery. But when Yisro is talking to them about the rest of Klal Yisroel he say ???? ?? ????? to add the extra aspect of ???? that is ?????? ???? ???? the slavery