slang vs good egg

slang and good egg both are nouns.

Word	Noun	Adjective	Verb	Adverb
slang	Yes	No	Yes	No
good egg	Yes	No	No	No

slang (noun)	good egg (noun)
a characteristic language of a particular group (as among thieves)	(old-fashioned slang) a good person
informal language consisting of words and expressions that are not considered appropriate for formal occasions; often vituperative or vulgar