Which term refers to the cessation of a relationship or the separation into parts?

The term that refers to the cessation of a relationship or the separation into parts is "dissolution." This word is often used in various contexts, including legal and social settings. For example, in legal terminology, it can refer to the dissolution of a marriage or partnership, indicating the formal ending of that relationship. In a broader sense, it can also apply to the breakup of organizations, agreements, or even substances being divided into their constituent parts.

The context of the term conveys a sense of disintegration or the act of breaking apart, making it fitting for describing the end of relationships or the separation of elements that were once joined.