calciferol vs viosterol

calciferol and viosterol both are nouns.

Word	Noun	Adjective	Verb	Adverb
calciferol	Yes	No	No	No
viosterol	Yes	No	No	No

As nouns, calciferol and viosterol are synonyms defined as:

Other synonyms of calciferol include cholecalciferol, D, ergocalciferol, vitamin D.

calciferol (noun)	viosterol (noun)
a fat-soluble vitamin that prevents rickets	a fat-soluble vitamin that prevents rickets