blocking agent vs medication

blocking agent and medication both are nouns.

Word	Noun	Adjective	Verb	Adverb
blocking agent	Yes	No	No	No
medication	Yes	No	No	No

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

blocking agent: a class of drugs that inhibit (block) some biological process
medication: (medicine) something that treats or prevents or alleviates the symptoms of disease

Other hypernyms of blocking agent include medicament, medicinal drug, medicine.

blocking agent (noun)	medication (noun)
a class of drugs that inhibit (block) some biological process	the act of treating with medicines or remedies
	(medicine) something that treats or prevents or alleviates the symptoms of disease