reunion vs reunification

reunion and reunification both are nouns.

Word	Noun	Adjective	Verb	Adverb
reunion	Yes	No	No	No
reunification	Yes	No	No	No

As nouns, reunion and reunification are synonyms defined as:

reunion (noun)	reunification (noun)
the act of coming together again	the act of coming together again
a party of former associates who have come together again