vitamin B1 vs aneurin

vitamin B1 and aneurin both are nouns.

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

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

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

Other synonyms of vitamin B1 include antiberiberi factor, thiamin, thiamine.

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