The 'height' of the ceiling is eight feet. [=the ceiling is eight feet above the floor; the ceiling is eight feet high]
It was 'the height of' stupidity to quit the team. [=it was extremely stupid to quit the team]
He was 'at the height of' his fame when he died. [=he died when he was most famous]
(..) she's on the older side. - What's that up there? - Uh, those are kids, they're... shuffling around, sword fighting or something, with sticks. You can see their height relative to this. These are cows. So, they're probably between and . - Boys, definitely. - Wow, your female's moving fast. (..)2012 Zero Dark Thirty