If you spell out the other Greek word, peri-choresis, you can hear in English what the word conveys: peri (from which we get words such as perimeter) and choresis (from which we get our word choreography)—a dancing circle. The word describes the interrelationship of the persons of the Trinity. That in everything God the Trinity is and does, each of the three persons relates to and engages with each of the other persons.