macintosh vs mack

macintosh and mack both are nouns.

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

As nouns, macintosh and mack are synonyms defined as:

Other synonyms of macintosh include mac, mackintosh.

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