thiamine vs aneurin

thiamine and aneurin both are nouns.

Word	Noun	Adjective	Verb	Adverb
thiamine	Yes	No	No	No
aneurin	Yes	No	No	No

As nouns, thiamine and aneurin are synonyms defined as:

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

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

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