A fascintaing though very small class of paired words is "homophonic antonyms" or "antonymic homophones." (These are both my own coinages as far as I know.) That is, words that sound alike but mean exactly opposite things. My classic example is To "raise" (build) a building and then "raze" (destroy) it to the ground. then there's another one that comes close without being perfect: All credit cards "accepted" "except".... Can anyone add to this list?