It changes over time. It's cultural. What's labeled intelligence today might not be the case in the future.
Critical thinking and problem solving, for me, fit your criteria. Are these nature or nurture?
And what of drive and ambition?
There are plenty of really smart people on the dole, yes? But they're probably just in the wrong place at the wrong time. How is an advantage an advantage if you're a genius ice sculpturer in say FL? :) Is that not a case of it being relative?