约定 | yuē dìng | to agree on sth (after discussion) / to conclude a bargain / to arrange / to promise / to stipulate / to make an appointment / stipulated (time, amount, quality etc) / an arrangement / a deal / appointment / undertaking / commitment / understanding / engagement / stipulation | |
订定 | dìng dìng | to set / to designate / to stipulate / to provide / to draw up / to formulate (rules etc) / stipulation |