In such types of human activities as work and communication, what is common?

Labor and communication, one might say, made a man out of a monkey, if we follow the theory of the emergence of man according to Darwin and Engels. When meaningful speech of a person appeared, a person himself appeared. When labor appeared, again a more or less intelligent creature was “born”. With the help of labor, man cognized nature and even himself, learned what he was capable of. And with the help of communication, a person exchanges information with other people, and again receives new knowledge. Communication develops personality in a person, it can have a great impact on a person. Most importantly, work and communication are associated with the fact that they helped a person to become rational and generally become a person. This is their main similarity.