planet vs follower

planet and follower both are nouns.

Word	Noun	Adjective	Verb	Adverb
planet	Yes	No	No	No
follower	Yes	No	No	No

As nouns, follower is a hypernym of planet; that is, follower is a word with a broader meaning than planet:

planet (noun)	follower (noun)
(astronomy) any of the nine large celestial bodies in the solar system that revolve around the sun and shine by reflected light; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto in order of their proximity to the sun; viewed from the constellation Hercules, all the planets rotate around the sun in a counterclockwise direction	a person who accepts the leadership of another
any celestial body (other than comets or satellites) that revolves around a star	someone who travels behind or pursues another
a person who follows or serves another