phentolamine vs virility drug

phentolamine and virility drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
phentolamine	Yes	No	No	No
virility drug	Yes	No	No	No

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

phentolamine: a virility drug (trade name Vasomax) to treat erectile dysfunction in men
virility drug: drug to treat impotence attributable to erectile dysfunction

Other hypernyms of phentolamine include anti-impotence drug.

phentolamine (noun)	virility drug (noun)
a virility drug (trade name Vasomax) to treat erectile dysfunction in men	drug to treat impotence attributable to erectile dysfunction