Mackinaw boat vs mackinaw

Mackinaw boat and mackinaw both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mackinaw boat	Yes	No	No	No
mackinaw	Yes	No	No	No

As nouns, Mackinaw boat and mackinaw are synonyms defined as:

Mackinaw boat and mackinaw: a flat-bottomed boat used on upper Great Lakes

Mackinaw boat (noun)	mackinaw (noun)
a flat-bottomed boat used on upper Great Lakes	a heavy woolen cloth heavily napped and felted, often with a plaid design
	a flat-bottomed boat used on upper Great Lakes
	a thick plaid blanket formerly used in the northwestern United States
	a short plaid coat made of made of thick woolen material