invalidation vs breakup

invalidation and breakup both are nouns.

Word	Noun	Adjective	Verb	Adverb
invalidation	Yes	No	No	No
breakup	Yes	No	No	No

As nouns, breakup is a hypernym of invalidation; that is, breakup is a word with a broader meaning than invalidation:

invalidation: (law) a formal termination (of a relationship or a judicial proceeding etc)
breakup: the termination or disintegration of a relationship (between persons or nations)

Other hypernyms of invalidation include dissolution.

invalidation (noun)	breakup (noun)
(law) a formal termination (of a relationship or a judicial proceeding etc)	the termination or disintegration of a relationship (between persons or nations)
when a person's thoughts and feelings are rejected, ignored, or judged.	coming apart