Giant's rhymes with:
giants, giants', supergiants, alliant's, client's, clients, clients', giants, giants', supergiants
Giant's sounds like:
gamunde's, gandhi's, gannett's, gantos, gantz, genentech, genentech's, genetic, genetics, gent's, gentz, giaconda's, giannattasio, giants, giants', gigantic, gintz, gnats, gonads, gondek, guandjo, guandjo's, gundog, gwyneth's, gwyneths