(n) (law) the replacement of one obligation by another by mutual agreement of both parties; usually the replacement of one of the original parties to a contract with the consent of the remaining party
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
[doraibu] (n) (1) drive; trip by car; driving; (vs, vi) (2) to (go for a) drive; to go on a trip by car; (vs, vt) (3) to drive (e.g. a car); (4) to drive (innovation, change, etc.); to propel; (P)#4073
[りょうしょう, ryoushou] (n, vs) (See ご了承) acknowledgement; acknowledgment; understanding (e.g. "please be understanding of the mess during our renovation"); noting; acceptance; (P)#6081