economic expert vs Thomas Malthus

economic expert and Thomas Malthus both are nouns.

Word	Noun	Adjective	Verb	Adverb
economic expert	Yes	No	No	No
Thomas Malthus	Yes	No	No	No

economic expert (noun)	Thomas Malthus (noun)
an expert in the science of economics	an English economist who argued that increases in population would outgrow increases in the means of subsistence (1766-1834)