Self-concept is nothing but the self-identity of a person, and it refers to the ideas one holds a person for himself or herself. These ideas might vary from sexual preference, academic mind, cultural identity, personality as well as physical characteristics to a person.
Whereas communication mainly depends on how we interact with others and how one compare himself or herself to the others, to the environment and to the people around them. The self-concept has a direct impact on our communication with others. We should know that our vocabulary and the tone of voice indicate how we feel about ourselves. The impression that we make to others with our daily contacts and interaction with them are the indicators of our self-concept.