ergocalciferol vs D

ergocalciferol and D both are nouns.

Word	Noun	Adjective	Verb	Adverb
ergocalciferol	Yes	No	No	No
D	Yes	No	No	No

As nouns, ergocalciferol and D are synonyms defined as:

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

ergocalciferol (noun)	D (noun)
a fat-soluble vitamin that prevents rickets	the 4th letter of the Roman alphabet
	the cardinal number that is the product of one hundred and five
	a fat-soluble vitamin that prevents rickets