powdered mustard vs mustard

powdered mustard and mustard both are nouns.

Word	Noun	Adjective	Verb	Adverb
powdered mustard	Yes	No	No	No
mustard	Yes	No	No	No

As nouns, mustard is a hypernym of powdered mustard; that is, mustard is a word with a broader meaning than powdered mustard:

powdered mustard: a substance such that one to three tablespoons dissolved in a glass of warm water is a homemade emetic
mustard: pungent powder or paste prepared from ground mustard seeds

Other hypernyms of powdered mustard include emetic, nauseant, vomit, vomitive, table mustard.

powdered mustard (noun)	mustard (noun)
a substance such that one to three tablespoons dissolved in a glass of warm water is a homemade emetic	pungent powder or paste prepared from ground mustard seeds
	leaves eaten as cooked greens
	any of several cruciferous plants of the genus Brassica