Mexitil vs antiarrhythmic

Mexitil and antiarrhythmic both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mexitil	Yes	No	No	No
antiarrhythmic	Yes	No	No	No

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

Mexitil: antiarrhythmic drug (trade name Mexitil) used to treat ventricular arrhythmias
antiarrhythmic: a drug used to treat an abnormal heart rhythm

Other hypernyms of Mexitil include antiarrhythmic drug, antiarrhythmic medication.

Mexitil (noun)	antiarrhythmic (noun)
antiarrhythmic drug (trade name Mexitil) used to treat ventricular arrhythmias	a drug used to treat an abnormal heart rhythm