What's the difference between albigenses and albigensian?

Albigenses

Definition:

• (n. pl.) Alt. of Albigeois

Example Sentences:

Albigensian

Definition:

• (a.) Of or pertaining to the Albigenses.

Example Sentences:

• (1) In the 13th century the Cathars put up a strong defence of their beliefs and territory against the merciless persecution meted out by the Albigensian crusade.