antipernicious anemia factor vs cobalamin

antipernicious anemia factor and cobalamin both are nouns.

Word	Noun	Adjective	Verb	Adverb
antipernicious anemia factor	Yes	No	No	No
cobalamin	Yes	No	No	No

As nouns, antipernicious anemia factor and cobalamin are synonyms defined as:

antipernicious anemia factor and cobalamin: a B vitamin that is used to treat pernicious anemia

Other synonyms of antipernicious anemia factor include cyanocobalamin, vitamin B12.

antipernicious anemia factor (noun)	cobalamin (noun)
a B vitamin that is used to treat pernicious anemia	a B vitamin that is used to treat pernicious anemia