stargazer vs Giovanni Schiaparelli

stargazer and Giovanni Schiaparelli both are nouns.

Word	Noun	Adjective	Verb	Adverb
stargazer	Yes	No	No	No
Giovanni Schiaparelli	Yes	No	No	No

stargazer (noun)	Giovanni Schiaparelli (noun)
heavy-bodied marine bottom-lurkers with eyes on flattened top of the head	Italian astronomer who first noted lines (which he called canals) on the surface of Mars (1835-1910)
a physicist who studies astronomy
someone indifferent to the busy world