Tambocor vs antiarrhythmic drug

Tambocor and antiarrhythmic drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
Tambocor	Yes	No	No	No
antiarrhythmic drug	Yes	No	No	No

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

Tambocor: oral antiarrhythmic medication (trade name Tambocor) used as a last resort in treating arrhythmias; increases the risk of sudden death in heart attack patients
antiarrhythmic drug: a drug used to treat an abnormal heart rhythm

Other hypernyms of Tambocor include antiarrhythmic, antiarrhythmic medication.

Tambocor (noun)	antiarrhythmic drug (noun)
oral antiarrhythmic medication (trade name Tambocor) used as a last resort in treating arrhythmias; increases the risk of sudden death in heart attack patients	a drug used to treat an abnormal heart rhythm