ipecac vs nauseant

ipecac and nauseant both are nouns.

Word	Noun	Adjective	Verb	Adverb
ipecac	Yes	No	No	No
nauseant	Yes	No	No	No

As nouns, nauseant is a hypernym of ipecac; that is, nauseant is a word with a broader meaning than ipecac:

ipecac: a medicinal drug used to evoke vomiting (especially in cases of drug overdose or poisoning)
nauseant: a medicine that induces nausea and vomiting

Other hypernyms of ipecac include emetic, vomit, vomitive.

ipecac (noun)	nauseant (noun)
a medicinal drug used to evoke vomiting (especially in cases of drug overdose or poisoning)	a medicine that induces nausea and vomiting