villeinage vs villainage

villeinage and villainage both are nouns.

Word	Noun	Adjective	Verb	Adverb
villeinage	Yes	No	No	No
villainage	Yes	No	No	No

As nouns, villeinage and villainage are synonyms defined as:

villeinage and villainage: the legal status or condition of servitude of a villein or feudal serf

villeinage (noun)	villainage (noun)
tenure by which a villein held land	the legal status or condition of servitude of a villein or feudal serf
the legal status or condition of servitude of a villein or feudal serf