Cleverness
Part of speech: noun
Definition: The property of being clever.
Example sentence: Books are in no hurry. An act of creation is in no hurry; it reads us, it privileges us infinitely. The notion that it is the occasion for our cleverness fills me with baffled bitterness and anger.
Ingenuity
Part of speech: noun
Definition: The ability to solve difficult problems, often in original and creative ways
Example sentence: No idea should be discarded completely, but - as one might imagine - it does take a degree of ingenuity to find a new spin on something as hackneyed as the 'Adam and Eve' story. But if you think you've got the chops for it, there's no reason not to try.