- 不成文 bùchéngwén unwrittennot written down; established by custom or habit rather than formal documentation
- 成文法 chéngwénfǎ statute lawLegal rules or codes formally created and published by a government body, such as constitutions and treaties; contrasted with [[不成文法|不成文法|bu4 cheng2 wen2 fa3]].
- 不成文法 bùchéngwénfǎ unwritten lawLegal norms like customary law or precedents that have legal force despite not being formally enacted or published as codes; common law.
- 不成文宪法 bùchéngwénxiànfǎ unwritten constitutiona constitution where the fundamental laws and principles are not codified into a single formal document but are instead based on conventions, judicial precedents, and separate statutes
- 成文宪法 chéngwénxiànfǎ written constitutionA statute constitution; a single or set of official documents that contain the fundamental laws of a state. a state.