Bostwick rhymes with:
hartwig, leftwich, vannortwick, berwick, beswick, borthwick, brunswick, burwick, chadwick, chiswick, debraudwick, goswick, hardwicke, hartwig, harwick, horwich, joswick, leftwich, lodwick, ludwick, newbraudwick, orwick, renwick, sedgewick, sedgwick, sedwick, shadwick, siwek, southwick, stanwick, vannortwick, warwick
Bostwick sounds like:
backdates, backseats, backsides, backstage, backstitch, backstitches, backwoods, baghdad's, baskets, bassists, beachheads, beasts, beckwith's, beefsteak, begets, bequests, besides, best's, bestows, bestwick, bezdek, bigots, biscuits, bisuteki, bisuteki's, boasts, bobcats, boosts, boschwitz, bostic, bostick, bostock, bouquets, boycotts, buckets, bustos, busts