Believers rhymes with:
nonbelievers, nonbelievers, leaver's, nonbelievers, relievers, unilever's, achievers, beavers, beevers, deaver's, deavers, fevers, grievers, leaver's, nonbelievers, reaver's, receivers, relievers, retrievers, seavers, seevers, sievers, unilever's, weaver's, weavers
Believers sounds like:
ballpark, ballparks, belabores, belabors, bloopers, blueberries, bolivars, bullfrog, bullfrogs