rubefacient vs medication

rubefacient and medication both are nouns.

Word	Noun	Adjective	Verb	Adverb
rubefacient	Yes	No	No	No
medication	Yes	No	No	No

As nouns, medication is a hypernym of rubefacient; that is, medication is a word with a broader meaning than rubefacient:

rubefacient: a medicine for external application that produces redness of the skin
medication: (medicine) something that treats or prevents or alleviates the symptoms of disease

Other hypernyms of rubefacient include medicament, medicinal drug, medicine.

rubefacient (noun)	medication (noun)
a medicine for external application that produces redness of the skin	the act of treating with medicines or remedies
	(medicine) something that treats or prevents or alleviates the symptoms of disease