neoclassicist vs exponent

neoclassicist and exponent both are nouns.

Word	Noun	Adjective	Verb	Adverb
neoclassicist	Yes	Yes	No	No
exponent	Yes	No	No	No

As nouns, exponent is a hypernym of neoclassicist; that is, exponent is a word with a broader meaning than neoclassicist:

Other hypernyms of neoclassicist include advocate, advocator, proponent.

neoclassicist (noun)	exponent (noun)
an advocate of neoclassicism	a mathematical notation indicating the number of times a quantity is multiplied by itself
	a person who pleads for a cause or propounds an idea
	someone who expounds and interprets or explains

neoclassicist (adjective)	exponent (adjective)
relating to or advocating neoclassicism