nauseant vs dry mustard

nauseant and dry mustard both are nouns.

Word	Noun	Adjective	Verb	Adverb
nauseant	Yes	No	No	No
dry mustard	Yes	No	No	No

As nouns, dry mustard is a hyponym of nauseant; that is, dry mustard is a word with a more specific, narrower meaning than nauseant:

nauseant: a medicine that induces nausea and vomiting
dry mustard: a substance such that one to three tablespoons dissolved in a glass of warm water is a homemade emetic

Other hyponyms of nauseant include ipecac, powdered mustard.

nauseant (noun)	dry mustard (noun)
a medicine that induces nausea and vomiting	a substance such that one to three tablespoons dissolved in a glass of warm water is a homemade emetic