xanthophyl vs xanthophyll

xanthophyl and xanthophyll both are nouns.

Word	Noun	Adjective	Verb	Adverb
xanthophyl	Yes	No	No	No
xanthophyll	Yes	No	No	No

As nouns, xanthophyl and xanthophyll are synonyms defined as:

xanthophyl and xanthophyll: yellow carotenoid pigments in plants and animal fats and egg yolks

Other synonyms of xanthophyl include lutein.

xanthophyl (noun)	xanthophyll (noun)
yellow carotenoid pigments in plants and animal fats and egg yolks	yellow carotenoid pigments in plants and animal fats and egg yolks