immunoglobulin vs Ig

immunoglobulin and Ig both are nouns.

Word	Noun	Adjective	Verb	Adverb
immunoglobulin	Yes	No	No	No
Ig	Yes	No	No	No

As nouns, immunoglobulin and Ig are synonyms defined as:

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

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

immunoglobulin (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