superior court vs judicature

superior court and judicature both are nouns.

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

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

superior court: any court that has jurisdiction above an inferior court
judicature: an assembly (including one or more judges) to conduct judicial business

Other hypernyms of superior court include court, tribunal.

superior court (noun)	judicature (noun)
any court that has jurisdiction above an inferior 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