Fergon vs drug

Fergon and drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fergon	Yes	No	No	No
drug	Yes	No	Yes	No

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

Fergon: trade name of a drug rich in iron; used to treat some types of anemia
drug: a substance that is used as a medicine or narcotic

Fergon (noun)	drug (noun)
trade name of a drug rich in iron; used to treat some types of anemia	a substance that is used as a medicine or narcotic

Fergon (verb)	drug (verb)
	administer a drug to
	use recreational drugs