Discards rhymes with:
card's, cards, cards', bard's, bernard's, bernards, card's, cards, cards', disregards, guard's, guards, hards, regards, retards, shards, yard's, yards
Discards sounds like:
datacards, decurtis, degrades, descartes, descartes's, desecrates, deserts, desserts, diacritic, discredits, djakarta's