thiamin vs vitamin B1

thiamin and vitamin B1 both are nouns.

Word	Noun	Adjective	Verb	Adverb
thiamin	Yes	No	No	No
vitamin B1	Yes	No	No	No

As nouns, thiamin and vitamin B1 are synonyms defined as:

thiamin and vitamin B1: a B vitamin that prevents beriberi; maintains appetite and growth

Other synonyms of thiamin include aneurin, antiberiberi factor, thiamine.

thiamin (noun)	vitamin B1 (noun)
a B vitamin that prevents beriberi; maintains appetite and growth	a B vitamin that prevents beriberi; maintains appetite and growth