nominal vs economic science

nominal and economic science both are nouns.

Word	Noun	Adjective	Verb	Adverb
nominal	Yes	Yes	No	No
economic science	Yes	No	No	No

nominal (noun)	economic science (noun)
a phrase that can function as the subject or object of a verb	the branch of social science that deals with the production and distribution and consumption of goods and services and their management

nominal (adjective)	economic science (adjective)
of, relating to, or characteristic of an amount that is not adjusted for inflation
pertaining to a noun or to a word group that functions as a noun
relating to or constituting or bearing or giving a name
existing in name only
insignificantly small; a matter of form only (`tokenish' is informal)
named; bearing the name of a specific person