duffel coat vs duffle coat

duffel coat and duffle coat both are nouns.

Word	Noun	Adjective	Verb	Adverb
duffel coat	Yes	No	No	No
duffle coat	Yes	No	No	No

As nouns, duffel coat and duffle coat are synonyms defined as:

duffel coat and duffle coat: a warm coat made of duffel; usually has a hood and fastens with toggles

duffel coat (noun)	duffle coat (noun)
a warm coat made of duffel; usually has a hood and fastens with toggles	a warm coat made of duffel; usually has a hood and fastens with toggles