Einon rhymes with:
absecon, acetosyringone, alteon, bergeron, calgon, crampon, decathlon, delaune, devaughn, doggone, haton, incheon, inchon, jumbotron, kirwan, lieson, malathion, mouton, papon, ptyon, recon, rubicon, savion, savon, scaleatron, sephlon, styron, suon, teason
Einon sounds like:
eamon, ehman, ehmann, ehmen, ein, em, ema, emina, emma, emme, emmi, emmie, emmy, emu, en, ena, enea, enema, enemy, enman, ennea, ennen, ennui, eno, eon, euan, ewan, ewen, eyman, eynon