blocker vs medication

blocker and medication both are nouns.

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

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

blocker: 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 blocker include medicament, medicinal drug, medicine.

blocker (noun)	medication (noun)
a class of drugs that inhibit (block) some biological process	the act of treating with medicines or remedies
a football player whose responsibility is to block players attempting to stop an offensive play	(medicine) something that treats or prevents or alleviates the symptoms of disease