Sui generis
Sui generis (; ) is a Latin phrase that means "of its (his, her, their) own kind; in a class by itself; unique."
Sui iuris
Sui iuris, also spelled as sui juris ( or ), is a Latin phrase that literally means "of one's own right". It is used in both civil law and canon law by the Catholic Church. The term church sui iuris is used in the Catholic Code of Canons of the Oriental Churches (CCEO) to denote the autonomous churches in Catholic communion: