Lucy in the sky with diamonds vs Elvis

Lucy in the sky with diamonds and Elvis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lucy in the sky with diamonds	Yes	No	No	No
Elvis	Yes	No	No	No

As nouns, Lucy in the sky with diamonds and Elvis are synonyms defined as:

Lucy in the sky with diamonds and Elvis: street name for lysergic acid diethylamide

Other synonyms of Lucy in the sky with diamonds include acid, back breaker, battery-acid, dose, dot, loony toons, pane, superman, window pane, Zen.

Lucy in the sky with diamonds (noun)	Elvis (noun)
street name for lysergic acid diethylamide	street name for lysergic acid diethylamide