What is the origin of the word "communication"

Communication originally refers to digging a ditch to connect two waters. As early as the end of the Spring and Autumn Period, there was a story of digging a ditch to connect two waters. This story is recorded in Zuo Zhuan's Nine Years of Mourning for the Duke: "Autumn, Wu, Tong Jianghuai." It means: nine years in Lu Aigong, autumn. Wu built a city in Yan State and dug ditches to connect the Yangtze River and the Yellow River. Later used to refer to the communication between the two sides; It also means unblocking each other's opinions. Ditches (field waterways) are also linked to the communication between people because they see the intersection and mutual communication of canals. Unlike canals, they are connected to each other and reach mutual agreement. Therefore, this word is used to describe the process of transferring information, thoughts and emotions between individuals or groups and reaching an agreement.