Aural vs Audial - What's the difference?

Audial is a synonym of aural.

is that aural is of or pertaining to the ear while audial is of, or relating to hearing, or to the sense or organs of hearing.

From (etyl) .

(en adjective)

Of or pertaining to the ear.

Of or pertaining to sound.

* aurally * binaural * cervicoaural * dextraural * sinistraural

From (etyl) .

(en adjective)

Of or pertaining to an aura.

* English contranyms

(-)

of, or relating to hearing, or to the sense or organs of hearing

* auditory, aural