carminative vs medicinal drug

carminative and medicinal drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
carminative	Yes	Yes	No	No
medicinal drug	Yes	No	No	No

As nouns, medicinal drug is a hypernym of carminative; that is, medicinal drug is a word with a broader meaning than carminative:

carminative: medication that prevents the formation of gas in the alimentary tract or eases its passing
medicinal drug: (medicine) something that treats or prevents or alleviates the symptoms of disease

Other hypernyms of carminative include medicament, medication, medicine.

carminative (noun)	medicinal drug (noun)
medication that prevents the formation of gas in the alimentary tract or eases its passing	(medicine) something that treats or prevents or alleviates the symptoms of disease

carminative (adjective)	medicinal drug (adjective)
relieving gas in the alimentary tract (colic or flatulence or griping)