immunoglobulin vs immune serum globulin

immunoglobulin and immune serum globulin both are nouns.

Word	Noun	Adjective	Verb	Adverb
immunoglobulin	Yes	No	No	No
immune serum globulin	Yes	No	No	No

As nouns, immunoglobulin and immune serum globulin are synonyms defined as:

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

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

immunoglobulin (noun)	immune serum globulin (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