Cleverness :: Cleverness (n.) The quality of being clever; skill; dexterity; adroitness.
Clevis :: Clevis (n.) A piece of metal bent in the form of an oxbow, with the two ends perforated to receive a pin, used on the end of the tongue of a plow, wagen, etc., to attach it to a draft chain, whiffletree, etc.; -- called also clavel, clevy..