Intelligent (adj) - showing the ability to learn and understand things easily.
- She's clearly very intelligent, but her lectures are hard to follow.
- Wilson, our quiet accountant, surprised us with his intelligent ideas over lunch yesterday.
Intelligence (noun) - the ability to learn, understand and make judgement based on reason.
- I was surprised someone of his intelligence hardly reads.
- William is blessed with good looks and intelligence, and he knows it.
