bellarmine vs greybeard

bellarmine and greybeard both are nouns.

Word	Noun	Adjective	Verb	Adverb
bellarmine	Yes	No	No	No
greybeard	Yes	No	No	No

As nouns, bellarmine and greybeard are synonyms defined as:

bellarmine and greybeard: a stoneware drinking jug with a long neck; decorated with a caricature of Cardinal Bellarmine (17th century)

Other synonyms of bellarmine include long-beard, longbeard.

bellarmine (noun)	greybeard (noun)
a stoneware drinking jug with a long neck; decorated with a caricature of Cardinal Bellarmine (17th century)	a stoneware drinking jug with a long neck; decorated with a caricature of Cardinal Bellarmine (17th century)
	a man who is very old