culmination vs closing

culmination and closing both are nouns.

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

As nouns, culmination and closing are synonyms defined as:

Other synonyms of culmination include completion, mop up, windup.

culmination (noun)	closing (noun)
a concluding action	termination of operations
the decisive moment in a novel or play	the act of closing something
(astronomy) a heavenly body's highest celestial point above an observer's horizon	a concluding action
a final climactic stage	approaching a particular destination; a coming closer; a narrowing of a gap
	the last section of a communication

culmination (adjective)	closing (adjective)
	final or ending