Wardens' rhymes with:
warden's, wardens, borden's, gordon's, jordan's, jordans, warden's, wardens, arden's, borden's, chernomyrdin's, cherumirdan's, darden's, garden's, gardens, gordon's, harden's, hardens, jordan's, jordans, pardons, riordan's, warden's, wardens
Wardens' sounds like:
warden's, wardens, warding, wartimes, weirdness, weirton's, wharton's, wording, worthen's, worthiness, worthing, writedowns, writhing, writing, writings