cytotoxic drug vs medication

cytotoxic drug and medication both are nouns.

Word	Noun	Adjective	Verb	Adverb
cytotoxic drug	Yes	No	No	No
medication	Yes	No	No	No

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

cytotoxic drug: any drug that has a toxic effect on cells; commonly used in chemotherapy to inhibit the proliferation of cancerous cells
medication: (medicine) something that treats or prevents or alleviates the symptoms of disease

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

cytotoxic drug (noun)	medication (noun)
any drug that has a toxic effect on cells; commonly used in chemotherapy to inhibit the proliferation of cancerous cells	the act of treating with medicines or remedies
	(medicine) something that treats or prevents or alleviates the symptoms of disease