Jean-Jacques Rousseau vs author

Jean-Jacques Rousseau and author both are nouns.

Word	Noun	Adjective	Verb	Adverb
Jean-Jacques Rousseau	Yes	No	No	No
author	Yes	No	Yes	No

Jean-Jacques Rousseau (noun)	author (noun)
French philosopher and writer born in Switzerland; believed that the natural goodness of man was warped by society; ideas influenced the French Revolution (1712-1778)	writes (books or stories or articles or the like) professionally (for pay)
	someone who originates or causes or initiates something

Jean-Jacques Rousseau (verb)	author (verb)
	be the author of