patriarch vs patriarchal

patriarch is a noun but patriarchal is not a noun.

Word	Noun	Adjective	Verb	Adverb
patriarch	Yes	No	No	No
patriarchal	No	Yes	No	No

patriarch (noun)	patriarchal (noun)
the male head of family or tribe
any of the early biblical characters regarded as fathers of the human race
title for the heads of the Eastern Orthodox Churches (in Istanbul and Alexandria and Moscow and Jerusalem)
a man who is older and higher in rank than yourself

patriarch (adjective)	patriarchal (adjective)
	characteristic of a form of social organization in which the male is the family head and title is traced through the male line
	relating to or characteristic of a man who is older or higher in rank