Descartes rhymes with:
cart, carte, mccart, mccartt, ahart, apart, art, bart, bossart, cart, carte, chart, dart, dartt, depart, fart, goulart, hardt, hart, harte, hartt, heart, impart, k-mart, kabart, mahrt, mart, marte, mccart, mccartt, part, parte, restart, schardt, smart, smartt, start, tart, tarte, tartt
Descartes sounds like:
datacards, decurtis, degrades, descartes's, desecrates, deserts, desserts, diacritic, discards, discredits, djakarta's