mac vs slicker

mac and slicker both are nouns.

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

As nouns, slicker is a hyponym of mac; that is, slicker is a word with a more specific, narrower meaning than mac:

mac: a waterproof raincoat made of rubberized fabric
slicker: a macintosh made from cotton fabric treated with oil and pigment to make it waterproof

Other hyponyms of mac include oilskin.

mac (noun)	slicker (noun)
a waterproof raincoat made of rubberized fabric	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