slickness vs slipperiness

slickness and slipperiness both are nouns.

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

As nouns, slickness and slipperiness are synonyms defined as:

Other synonyms of slickness include slick, slip.

slickness (noun)	slipperiness (noun)
a slippery smoothness	a slippery smoothness
a kind of fluent easy superficiality	the quality of being a slippery rascal
verbal misrepresentation intended to take advantage of you in some way