Old Nick vs Lucifer

Old Nick and Lucifer both are nouns.

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

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

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

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

Old Nick (noun)	Lucifer (noun)
(Judeo-Christian and Islamic religions) chief spirit of evil and adversary of God; tempter of mankind; master of Hell	a planet (usually Venus) seen just before sunrise in the eastern sky
	(Judeo-Christian and Islamic religions) chief spirit of evil and adversary of God; tempter of mankind; master of Hell