immune globulin vs Ig

immune globulin and Ig both are nouns.

Word	Noun	Adjective	Verb	Adverb
immune globulin	Yes	No	No	No
Ig	Yes	No	No	No

As nouns, immune globulin and Ig are synonyms defined as:

immune globulin and Ig: a class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune response

Other synonyms of immune globulin include immune gamma globulin, immune serum globulin, immunoglobulin.

immune globulin (noun)	Ig (noun)
a class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune response	a class of proteins produced in lymph tissue in vertebrates and that function as antibodies in the immune response