Bi vs bismuth

Bi and bismuth both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bi	Yes	No	No	No
bismuth	Yes	No	No	No

As nouns, Bi and bismuth are synonyms defined as:

Bi and bismuth: a heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product from ores of other metals

Other synonyms of Bi include atomic number 83.

Bi (noun)	bismuth (noun)
a heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product from ores of other metals	a heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product from ores of other metals