culmination vs moment

culmination and moment both are nouns.

Word	Noun	Adjective	Verb	Adverb
culmination	Yes	No	No	No
moment	Yes	No	No	No

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

Other hypernyms of culmination include instant, minute, second.

culmination (noun)	moment (noun)
a concluding action	having important effects or influence
the decisive moment in a novel or play	the n-th moment of a distribution is the expected value of the n-th power of the deviations from a fixed value
(astronomy) a heavenly body's highest celestial point above an observer's horizon	a turning force produced by an object acting at a distance (or a measure of that force)
a final climactic stage	a particular point in time
	an indefinitely short time
	at this time