Bellcore's rhymes with:
becor's, centocor's, encor's, encores, nucor's, backdoors, baltimore's, bangalore's, becor's, bookstores, carnivores, centaur's, centaurs, centocor's, commodore's, dinosaurs, downpours, drugstores, ecuador's, encor's, encores, indoors, megastores, mentor's, nucor's, phosphors, salvador's, sophomores, superstores, toystores, unprofor's
Bellcore's sounds like:
balcerowicz, balcerzak, blackrock, blasier's, blazers, bleachers, blockers, bluegrass, bolger's, bulgaria's