sauce vs condiment

sauce and condiment both are nouns.

Word	Noun	Adjective	Verb	Adverb
sauce	Yes	No	Yes	No
condiment	Yes	No	No	No

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

sauce: flavorful relish or dressing or topping served as an accompaniment to food
condiment: a preparation (a sauce or relish or spice) to enhance flavor or enjoyment

sauce (noun)	condiment (noun)
flavorful relish or dressing or topping served as an accompaniment to food	a preparation (a sauce or relish or spice) to enhance flavor or enjoyment

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