tartar emetic vs mordant

tartar emetic and mordant both are nouns.

Word	Noun	Adjective	Verb	Adverb
tartar emetic	Yes	No	No	No
mordant	Yes	Yes	No	No

As nouns, mordant is a hypernym of tartar emetic; that is, mordant is a word with a broader meaning than tartar emetic:

tartar emetic: a poisonous colorless salt used as a mordant and in medicine
mordant: a substance used to treat leather or other materials before dyeing; aids in dyeing process

Other hypernyms of tartar emetic include tartrate.

tartar emetic (noun)	mordant (noun)
a poisonous colorless salt used as a mordant and in medicine	a substance used to treat leather or other materials before dyeing; aids in dyeing process

tartar emetic (adjective)	mordant (adjective)
	of a substance, especially a strong acid; capable of destroying or eating away by chemical action
	harshly ironic or sinister