The difference is that we do not say "I am for sure." The valley-girl adverb "for sure" means "certainly."
There is no difference between "certain" and "for sure."
i am pretty sure there is no difference google it if you are not to sure
i am not sure
not sure
not sure
Im not sure... but i think 14. ? im not sure.
the difference is a rarefaction needs vibration i believe i'mnot sure
i am not sure
Not sure
not sure
yes it sure does
not sure