Bukavu's rhymes with:
andrew's, andrews, andrews', avenue's, avenues, barbecue's, barbecues, barbeques, breakthroughs, cashews, cockatoos, codrescu's, cosatu's, donohue's, fayrouz, feverfews, guru's, gurus, hairdos, hindus, horseshoes, hutu's, hutus, interbrew's, interviews, landview's, macandrews, mcandrews, medianews, mildews, miscues, mobutu's, mogadishu's, montagu's, netanyahu's, overviews, previews, rescues, residues, revenues, sigafoos, statues, sundews, syracuse, tissues, yahoos
Bukavu's sounds like:
backpack, backpacks, backups, bagpipes, bake-offs, bespeak, bespeaks, biceps, bishop's, bishops, bishops', bookshops, boskovich, bukovsky, busboys