While vs. Since

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Difference Between While and Since
Whilenoun
An uncertain duration of time, a period of time.
He lectured for quite a long while.Sinceadverb
From a specified time in the past.
I met him last year, but haven't seen him since.Whileconjunction
During the same time that.
He was sleeping while I was singing.Sincepreposition
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.
Whileconjunction
Although.
This case, while interesting, is a bit frustrating.Sincepreposition
Continuously during that period of time.
I have known her since last year.ADVERTISEMENT
Whileconjunction
Until.
I'll wait while you've finished painting.Sincepreposition
At certain points during that period of time.
Whileconjunction
As long as.
While you're at school you may live at home.Whilepreposition
Until.
Whileverb
(transitive) To pass (time) idly.
Whileverb
To loiter.
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Whilenoun
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