Cordial relations can be described as friendly and warm interactions between two or more people. The term can be broken down into two crossword solutions: AMITY (5 letters) and KIN (3 letters). AMITY is defined as a friendly relationship between two or more people, while KIN is defined as a group of people related by blood or marriage. Together, these two words describe the concept of cordial relations, which is a friendly and warm relationship between two or more people.