kangaroo court vs judicature

kangaroo court and judicature both are nouns.

Word	Noun	Adjective	Verb	Adverb
kangaroo court	Yes	No	No	No
judicature	Yes	No	No	No

As nouns, judicature is a hypernym of kangaroo court; that is, judicature is a word with a broader meaning than kangaroo court:

kangaroo court: an irregular unauthorized court
judicature: an assembly (including one or more judges) to conduct judicial business

Other hypernyms of kangaroo court include court, tribunal.

kangaroo court (noun)	judicature (noun)
an irregular unauthorized court	the act of meting out justice according to the law
	the position of judge
	the system of law courts that administer justice and constitute the judicial branch of government
	an assembly (including one or more judges) to conduct judicial business