Harmonious Agreement is a term used to describe a situation in which two or more parties come to an agreement that is beneficial to all involved. This type of agreement is often achieved through compromise and understanding, and is usually reached without conflict. Two words that are commonly used to describe this type of agreement are 'ACCORD' and 'UNISON'. ACCORD is defined as an agreement or settlement of a dispute while UNISON is defined as a state of agreement or harmony. Both words imply that the parties involved have come to a mutually beneficial agreement.