"Cogovern" refers to a partnership or joint effort in governing, and several synonyms can express this concept. "Collaborate" describes the act of working together to achieve a common goal, often used in a business or project context. "Cooperate" refers to a willingness to assist or work with others, with a sense of mutual benefit. "Conspire" suggests a more secretive or illicit partnership, often used with negative connotations. "Coordinate" implies organizing or arranging efforts, as in coordinating a team's activities. "Synergize" describes the benefits of combining efforts to create a more productive result. Ultimately, these synonyms all describe the act of working together in a mutually beneficial partnership.