victimization vs mistreatment

victimization and mistreatment both are nouns.

Word	Noun	Adjective	Verb	Adverb
victimization	Yes	No	No	No
mistreatment	Yes	No	No	No

As nouns, mistreatment is a hypernym of victimization; that is, mistreatment is a word with a broader meaning than victimization:

victimization: an act that exploits or victimizes someone (treats them unfairly)
mistreatment: the practice of treating (someone or something) badly

victimization (noun)	mistreatment (noun)
an act that exploits or victimizes someone (treats them unfairly)	the practice of treating (someone or something) badly
adversity resulting from being made a victim