slang vs plum

slang and plum both are nouns.

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

slang (noun)	plum (noun)
a characteristic language of a particular group (as among thieves)	a highly desirable position or assignment
informal language consisting of words and expressions that are not considered appropriate for formal occasions; often vituperative or vulgar	any of numerous varieties of small to medium-sized round or oval fruit having a smooth skin and a single pit
	any of several trees producing edible oval fruit having a smooth skin and a single hard stone

slang (adverb)	plum (adverb)
	exactly
	completely; used as intensifiers