Backyards rhymes with:
junkyards, stockyards, courtyards, graveyards, junkyards, lumberyards, shipyard's, shipyards, stockyards, bankcards, blowhards, bodyguards, boulevards, 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
Backyards sounds like:
backwards, beckworth's, begrudge, biohazards, bogardus, buzzard's, buzzards, buzzwords