This is the 82nd most frequent Azerbaijani word.
olsun
"Let it be" or "okay."
Here, 'olsun' ('let it be') expresses allowance and agreement with the decision being suggested.
Bu mənim təklifimdir, amma sən qərar ver, necə istəyirsənsə, elə olsun.
This is my suggestion, but you decide; make it as you wish.
In this context, 'olsun' ('come true') is used to express a wish or desire for something positive to happen.
Arzuların ən gözəli gerçək olsun.
May the most beautiful of wishes come true.
Here, 'olsun' ('may it be') indicates selecting between options, showing acceptance of either choice.