Beelzebub vs Old Nick

Beelzebub and Old Nick both are nouns.

Word	Noun	Adjective	Verb	Adverb
Beelzebub	Yes	No	No	No
Old Nick	Yes	No	No	No

As nouns, Beelzebub and Old Nick are synonyms defined as:

Beelzebub and Old Nick: (Judeo-Christian and Islamic religions) chief spirit of evil and adversary of God; tempter of mankind; master of Hell

Other synonyms of Beelzebub include Devil, Lucifer, Prince of Darkness, Satan, the Tempter.

Beelzebub (noun)	Old Nick (noun)
(Judeo-Christian and Islamic religions) chief spirit of evil and adversary of God; tempter of mankind; master of Hell	(Judeo-Christian and Islamic religions) chief spirit of evil and adversary of God; tempter of mankind; master of Hell