Boulevards rhymes with:
backyards, bankcards, blowhards, bodyguards, courtyards, datacards, diehards, flashcards, graveyards, hildegardes, junkyards, lifeguards, lumberyards, mastercard's, mastercards, postcards, safecard's, safeguards, scorecards, shipyard's, shipyards, stockyards, sungard's, vanguard's
Boulevards sounds like:
billboard's, billboards, bluebirds