Bookstores rhymes with:
drugstores, megastores, superstores, toystores, centaur's, centaurs, drugstores, megastores, mentor's, superstores, toystores
Bookstores sounds like:
babysitters, backdoors, backstairs, backstroke, backtrack, backtracks, backwaters, bacteria's, bastarache, baxter's, boisterous, booster's, boosters, busters