purgative vs medication

purgative and medication both are nouns.

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

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

purgative: a purging medicine; stimulates evacuation of the bowels
medication: (medicine) something that treats or prevents or alleviates the symptoms of disease

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

purgative (noun)	medication (noun)
a purging medicine; stimulates evacuation of the bowels	the act of treating with medicines or remedies
	(medicine) something that treats or prevents or alleviates the symptoms of disease

purgative (adjective)	medication (adjective)
strongly laxative