Avignon rhymes with:
anton, arabichon, arabicon, bygone, cabletron, chemlawn, cinnabon, coupon, fair-lawn, fairlawn, kingon, kulon, mahlon, marienbonn, mastodon, regeneron, roselawn, sandon, saskatchewan, schiferon, skylawn, woebegone
Avignon sounds like:
abkhazian, abscam, absecon, abyssinia, abyssinian, afghan, afghani, afsane, aubuchon, avakian, aviacion, aviazione