marchand de vin vs sauce

marchand de vin and sauce both are nouns.

Word	Noun	Adjective	Verb	Adverb
marchand de vin	Yes	No	No	No
sauce	Yes	No	Yes	No

As nouns, sauce is a hypernym of marchand de vin; that is, sauce is a word with a broader meaning than marchand de vin:

marchand de vin: brown sauce with mushrooms and red wine or Madeira
sauce: flavorful relish or dressing or topping served as an accompaniment to food

marchand de vin (noun)	sauce (noun)
brown sauce with mushrooms and red wine or Madeira	flavorful relish or dressing or topping served as an accompaniment to food

marchand de vin (verb)	sauce (verb)
	add zest or flavor to, make more interesting
	dress (food) with a relish
	behave saucily or impudently towards