Verified answer

Waist and waste, respectively.

Waist and waste are correct; but they are homophones - not homonyms. Homonyms have different meanings but are pronounced and spelled alike. e.g. quail, the bird and quail, to recoil, wither, decline or falter.

There is yet a third variety which is the homograph. Here, words are spelled alike but are pronounced differently and have different meanings - e.g. bow - front of ship, bow - the knot.

Refuse (pronounced REF-fuce, not re-FUSE) means rubbish, trash, etc

The answer would be waist and waste.

waist and waste