cosmos vs celestial body

cosmos and celestial body both are nouns.

Word	Noun	Adjective	Verb	Adverb
cosmos	Yes	No	No	No
celestial body	Yes	No	No	No

cosmos (noun)	celestial body (noun)
everything that exists anywhere	natural objects visible in the sky
any of various mostly Mexican herbs of the genus Cosmos having radiate heads of variously colored flowers and pinnate leaves; popular fall-blooming annuals