apex of the sun's way vs celestial sphere

apex of the sun's way and celestial sphere both are nouns.

Word	Noun	Adjective	Verb	Adverb
apex of the sun's way	Yes	No	No	No
celestial sphere	Yes	No	No	No

apex of the sun's way (noun)	celestial sphere (noun)
the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars	the apparent surface of the imaginary sphere on which celestial bodies appear to be projected