Sentence:  "A Court of <WSD>equity</WSD> knows its own province." 
Meaning of the word marked with <WSD> tags:  Within many types of society, the jurisdictional principle from which a court of law or other similar legal body derives a certain extra-statutory discretion and is thereby empowered to decide legal matters and to provide legal relief apart from, though not in violation of, the prevailing legal code; in some cases, a court "sitting in equity" may provide relief to a complainant should the code be found either inapplicable or insufficient to do so.