cassock vs soutane

cassock and soutane both are nouns.

Word	Noun	Adjective	Verb	Adverb
cassock	Yes	No	No	No
soutane	Yes	No	No	No

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

cassock: a black garment reaching down to the ankles; worn by priests or choristers
soutane: a long cassock with buttons down the front; worn by Roman Catholic priests

Other hyponyms of cassock include outer cassock, outer rason, inner cassock, inner rason.

cassock (noun)	soutane (noun)
a black garment reaching down to the ankles; worn by priests or choristers	a long cassock with buttons down the front; worn by Roman Catholic priests