retinol vs axerophthol

retinol and axerophthol both are nouns.

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

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

retinol: an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene
axerophthol: any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes

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

retinol (noun)	axerophthol (noun)
an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene	any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes