finalization vs closing

finalization and closing both are nouns.

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

As nouns, closing is a hypernym of finalization; that is, closing is a word with a broader meaning than finalization:

Other hypernyms of finalization include completion, culmination, mop up, windup.

finalization (noun)	closing (noun)
the act of finalizing	termination of operations
	the act of closing something
	a concluding action
	approaching a particular destination; a coming closer; a narrowing of a gap
	the last section of a communication

finalization (adjective)	closing (adjective)
	final or ending