planet vs planetal

planet is a noun but planetal is not a noun.

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

planet (noun)	planetal (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
any celestial body (other than comets or satellites) that revolves around a star
a person who follows or serves another

planet (adjective)	planetal (adjective)
	of or relating to or resembling the physical or orbital characteristics of a planet or the planets