stargazer vs Aristarchus of Samos

stargazer and Aristarchus of Samos both are nouns.

Word	Noun	Adjective	Verb	Adverb
stargazer	Yes	No	No	No
Aristarchus of Samos	Yes	No	No	No

stargazer (noun)	Aristarchus of Samos (noun)
heavy-bodied marine bottom-lurkers with eyes on flattened top of the head	an ancient Greek astronomer who was one of the first to propose a heliocentric theory of the universe (circa 270 BC)
a physicist who studies astronomy
someone indifferent to the busy world