Dramamine vs antiemetic drug

Dramamine and antiemetic drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dramamine	Yes	No	No	No
antiemetic drug	Yes	No	No	No

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

Dramamine: antihistamine and antiemetic (trade name Dramamine) used to treat motion sickness
antiemetic drug: a drug that prevents or alleviates nausea and vomiting

Other hypernyms of Dramamine include antiemetic, antihistamine.

Dramamine (noun)	antiemetic drug (noun)
antihistamine and antiemetic (trade name Dramamine) used to treat motion sickness	a drug that prevents or alleviates nausea and vomiting