GNP vs real GNP

GNP and real GNP both are nouns.

Word	Noun	Adjective	Verb	Adverb
GNP	Yes	No	No	No
real GNP	Yes	No	No	No

As nouns, real GNP is a hyponym of GNP; that is, real GNP is a word with a more specific, narrower meaning than GNP:

GNP: former measure of the United States economy; the total market value of goods and services produced by all citizens and capital during a given period (usually 1 yr)
real GNP: a version of the GNP that has been adjusted for the effects of inflation

Other hyponyms of GNP include real gross national product.

GNP (noun)	real GNP (noun)
former measure of the United States economy; the total market value of goods and services produced by all citizens and capital during a given period (usually 1 yr)	a version of the GNP that has been adjusted for the effects of inflation