mackintosh vs mack

mackintosh and mack both are nouns.

Word	Noun	Adjective	Verb	Adverb
mackintosh	Yes	No	No	No
mack	Yes	No	No	No

As nouns, mackintosh and mack are synonyms defined as:

Other synonyms of mackintosh include mac, macintosh.

mackintosh (noun)	mack (noun)
a lightweight waterproof (usually rubberized) fabric	a waterproof raincoat made of rubberized fabric
a waterproof raincoat made of rubberized fabric