culmination vs celestial point

culmination and celestial point both are nouns.

Word	Noun	Adjective	Verb	Adverb
culmination	Yes	No	No	No
celestial point	Yes	No	No	No

As nouns, celestial point is a hypernym of culmination; that is, celestial point is a word with a broader meaning than culmination:

culmination: (astronomy) a heavenly body's highest celestial point above an observer's horizon
celestial point: a point in the heavens (on the celestial sphere)

culmination (noun)	celestial point (noun)
a concluding action	a point in the heavens (on the celestial sphere)
the decisive moment in a novel or play
(astronomy) a heavenly body's highest celestial point above an observer's horizon
a final climactic stage