communication without words

interesting, but we could communicate without words, dogs without barking. How would communication take place between living beings. After all, with the help of a speech apparatus, we establish contact not only with those similar to us, but also with other beings. And these contacts are successful. Of course, not all of us understand, but everyone knows for sure that we are talking or communicating, although not in understandable dialects. Then if everyone talks and even silent fish. then the cells must communicate, they are also alive. But how, here's the mystery. Most likely, whoever races it, can manage life, without interference, but with the help of a word.