Borealis rhymes with:
maryalice, maryalice, alice, balas, callace, callous, callus, dallas, dallas', digitalis, gallus, ilalis, ilalis', kallus, kalous, malice, maryalice, palace, pallas, prothallus
Borealis sounds like:
barlage, barrels, barrilleaux, berlack, berle's, berles, berles', berlex, berlioz, berls, berrylike, beverly's, brailles, brawls, briles, brill's, broyles, burials, burleigh, burlesque, burrell's