vitamin B2 vs riboflavin

vitamin B2 and riboflavin both are nouns.

Word	Noun	Adjective	Verb	Adverb
vitamin B2	Yes	No	No	No
riboflavin	Yes	No	No	No

As nouns, vitamin B2 and riboflavin are synonyms defined as:

vitamin B2 and riboflavin: a B vitamin that prevents skin lesions and weight loss

Other synonyms of vitamin B2 include hepatoflavin, lactoflavin, ovoflavin, vitamin G.

vitamin B2 (noun)	riboflavin (noun)
a B vitamin that prevents skin lesions and weight loss	a B vitamin that prevents skin lesions and weight loss