契 - pledge, promise, vow

(written) contract; agreement

opportunity; chance

contract; compact; agreement

non-disclosure agreement; NDA

prenuptial agreement; prenup

social contract theory (e.g. Rousseau's)

prenuptial agreement; prenup

conclusion of a contract; consummation of a contract

consulting agreement; advisory contract

breach of contract

having a happy and harmonious relationship (of a husband and wife)

international contract (agreement)