slickness vs smoothness

slickness and smoothness both are nouns.

Word	Noun	Adjective	Verb	Adverb
slickness	Yes	No	No	No
smoothness	Yes	No	No	No

As nouns, smoothness is a hypernym of slickness; that is, smoothness is a word with a broader meaning than slickness:

slickness (noun)	smoothness (noun)
a slippery smoothness	a texture without roughness; smooth to the touch
a kind of fluent easy superficiality	the quality of having a level and even surface
verbal misrepresentation intended to take advantage of you in some way	the quality of being free from errors or interruptions
	the quality of being bland and gracious or ingratiating in manner
	powerful and effective language