Methuselah vs patriarch

Methuselah and patriarch both are nouns.

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

As nouns, patriarch is a hyponym of Methuselah; that is, patriarch is a word with a more specific, narrower meaning than Methuselah:

Other hyponyms of Methuselah include codger, old codger, antique, gaffer, old-timer, old geezer, oldtimer.

Methuselah (noun)	patriarch (noun)
(Old Testament) a patriarch (grandfather of Noah) who is said to have lived 969 years	the male head of family or tribe
a man who is very old	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