injustice vs actus reus

injustice and actus reus both are nouns.

Word	Noun	Adjective	Verb	Adverb
injustice	Yes	No	No	No
actus reus	Yes	No	No	No

As nouns, actus reus is a hypernym of injustice; that is, actus reus is a word with a broader meaning than injustice:

Other hypernyms of injustice include misconduct, wrongdoing, wrongful conduct.

injustice (noun)	actus reus (noun)
an unjust act	activity that transgresses moral or civil law
the practice of being unjust or unfair