out-and-outer vs argot

out-and-outer and argot both are nouns.

Word	Noun	Adjective	Verb	Adverb
out-and-outer	Yes	No	No	No
argot	Yes	No	No	No

out-and-outer (noun)	argot (noun)
someone who is excellent at something	a characteristic language of a particular group (as among thieves)