Cards' rhymes with:
card's, cards, discards, bard's, bernard's, bernards, card's, cards, discards, disregards, guard's, guards, hards, regards, retards, shards, yard's, yards
Cards' sounds like:
carats, card's, cardiac, cardiges, cardis, cardiss, cardosa, cardosi, cardoso, cardoso's, cardoza, cardozo, cards, carducci, carrots, carthage, carts, ceredase, cerritos, charades, chariots, charities, charities', charity's, charts, chertkow, cherts, chordates, chords, cigarette's, cigarettes, cohorts, cordage, cordasco, cordes, cordis, cords, cordts, coretech, corrodes, cortege, cortes, cortese, cortesi, cortex, cortez, corteze, coseratz, court's, courteous, courtesies, courtesy, courthouse, courthouses, courtis, courtois, courts, courts', coward's, cowardice, cowards, craddock, cradic, cradock, crates, creates, credit's, credits, creditwatch, creeds, cretaceous, crites, critic, critic's, criticize, criticizes, critics, critics', critique, critiques, critz, croat's, croatia's, croats, crotch, crotts, crowd's, crowds, crude's, crudes, crutch, crutches, curt's, curtice, curtis, curtis', curtiss, curts, curtsy