oilskin vs slicker

oilskin and slicker both are nouns.

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

As nouns, oilskin and slicker are synonyms defined as:

oilskin and slicker: a macintosh made from cotton fabric treated with oil and pigment to make it waterproof

oilskin (noun)	slicker (noun)
a macintosh made from cotton fabric treated with oil and pigment to make it waterproof	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