finagler vs slicker

finagler and slicker both are nouns.

Word	Noun	Adjective	Verb	Adverb
finagler	Yes	No	No	No
slicker	Yes	No	No	No

As nouns, slicker is a hypernym of finagler; that is, slicker is a word with a broader meaning than finagler:

Other hypernyms of finagler include beguiler, cheat, cheater, deceiver, trickster.

finagler (noun)	slicker (noun)
a deceiver who uses crafty misleading methods	a macintosh made from cotton fabric treated with oil and pigment to make it waterproof
	someone who leads you to believe something that is not true
	a person with good manners and stylish clothing