paterfamilias vs patriarch

paterfamilias and patriarch both are nouns.

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

As nouns, paterfamilias and patriarch are synonyms defined as:

paterfamilias (noun)	patriarch (noun)
the male head of family or tribe	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