If we mean by the term communication the perfect reproduction of a thought in our mind in another mind, then communication is impossible.
Why? Some simple but important reasons. We are all different, have had different experiences, lived in different places and that makes the elements of messages, such as words and gestures, different from other minds. The differences make it impossible to say anything and have that idea perfectly reflected in another mind.
Communication is tough and deserves our full and continuous attention.