Secretion rhymes with:
accretion, accretion, excretion, accretion, excretion, grecian, accretion, carburetion, completion, deletion, depletion, excretion, grecian, phoenician, tieszen, venetian
Secretion sounds like:
sardina, sardine, sardinha, sardinia, sartain, sartin, scardina, scardino, sciortino, scrotten, scrutiny, scruton, scrutton, seratonin, serotonin, sheraton, sheridan, shorten, sordoni, sortino, srdan