uniting vs unification

uniting and unification both are nouns.

Word	Noun	Adjective	Verb	Adverb
uniting	Yes	No	No	No
unification	Yes	No	No	No

As nouns, uniting and unification are synonyms defined as:

Other synonyms of uniting include conjugation, jointure, union.

uniting (noun)	unification (noun)
the act of making or becoming a single unit	the act of making or becoming a single unit
the combination of two or more commercial companies	an occurrence that involves the production of a union
	the state of being joined or united or linked