blanc fixe vs barium sulfate

blanc fixe and barium sulfate both are nouns.

Word	Noun	Adjective	Verb	Adverb
blanc fixe	Yes	No	No	No
barium sulfate	Yes	No	No	No

As nouns, blanc fixe and barium sulfate are synonyms defined as:

blanc fixe and barium sulfate: a white insoluble radiopaque powder used as a pigment

Other synonyms of blanc fixe include barium sulphate.

blanc fixe (noun)	barium sulfate (noun)
a white insoluble radiopaque powder used as a pigment	a white insoluble radiopaque powder used as a pigment