Warwick's rhymes with:
marwick's, marwick's, shandwick's, bolsheviks, broomsticks, candlesticks, celtics', chopsticks, comptronix, crucifix, cyrix, kubrick's, lipsticks, lunatics, marwick's, micronics, nightsticks, picnics, politics, politics', shandwick's, toothpicks, topix, upticks, yardsticks
Warwick's sounds like:
war's, warehouse, warehouses, wares, warga, wargo, wark, warrick, warriors, wars, wars', warsaw, warsaw's, warsaws, warshaw, warshawsky, warszawa, warwick, warzecha, wearers, wearhouse, wears, weers, weir's, weirauch, weirich, weirick, werk, werke, weyers, weyhrauch, weyrauch, weyrich, weyrick, where's, whereas, whorehouse, whores, wiers, wires, wirick, wirkus, wirz, work, work's, works, works', workweek, workweeks, worriers, worries, worse, worseck, wrack, wrage, wragg, wreak, wreaks, wreck, wreckage, wrecks, wrice, wruck, wurz, wyers, wyrick