astronomer vs Brahe

astronomer and Brahe both are nouns.

Word	Noun	Adjective	Verb	Adverb
astronomer	Yes	No	No	No
Brahe	Yes	No	No	No

astronomer (noun)	Brahe (noun)
a physicist who studies astronomy	Danish astronomer whose observations of the planets provided the basis for Kepler's laws of planetary motion (1546-1601)