dehydroretinol vs axerophthol

dehydroretinol and axerophthol both are nouns.

Word	Noun	Adjective	Verb	Adverb
dehydroretinol	Yes	No	No	No
axerophthol	Yes	No	No	No

As nouns, axerophthol is a hypernym of dehydroretinol; that is, axerophthol is a word with a broader meaning than dehydroretinol:

dehydroretinol: a viscous alcohol that is less active in mammals than is vitamin A1
axerophthol: any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes

Other hypernyms of dehydroretinol include A, antiophthalmic factor, vitamin A.

dehydroretinol (noun)	axerophthol (noun)
a viscous alcohol that is less active in mammals than is vitamin A1	any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes