While vs. Since
Difference Between While and Since
An uncertain duration of time, a period of time.He lectured for quite a long while.
From a specified time in the past.I met him last year, but haven't seen him since.
During the same time that.He was sleeping while I was singing.
From: referring to a period of time ending in the present and defining it by the point in time at which it started, or the period in which its starting point occurred.
Although.This case, while interesting, is a bit frustrating.
Continuously during that period of time.I have known her since last year.
Until.I'll wait while you've finished painting.
At certain points during that period of time.
As long as.While you're at school you may live at home.
(transitive) To pass (time) idly.
a period of indeterminate length (usually short) marked by some action or condition;he was here for a little whileI need to rest for a piecea spell of good weathera patch of bad weather