Ambs rhymes with:
am's, ams, brams, cam's, clams, crams, dam's, damns, dams, drams, exams, grahams, gramm's, gramms, grams, hammes, hams, jam's, jams, krammes, lamb's, lambs, lambs', lamm's, mesdames, pam's, rams, sam's, samms, sams, scams, slams, tambs, trams, yams
Ambs sounds like:
ambac, ambase, ambiguous, ambush, ambushes, amfac, amfesco, amoebas, amoebic, ampco, ampex, amphibious