shakedown vs slang

shakedown and slang both are nouns.

Word	Noun	Adjective	Verb	Adverb
shakedown	Yes	Yes	No	No
slang	Yes	No	Yes	No

shakedown (noun)	slang (noun)
extortion of money (as by blackmail)	a characteristic language of a particular group (as among thieves)
a very thorough search of a person or a place	informal language consisting of words and expressions that are not considered appropriate for formal occasions; often vituperative or vulgar
initial adjustments to improve the functioning or the efficiency and to bring to a more satisfactory state

shakedown (adjective)	slang (adjective)
intended to test a new system under operating conditions and to familiarize the operators with the system