This document discusses organizational communication and its importance. It defines an organization as a group of people working together to achieve common objectives. Effective communication is essential for proper coordination between employees. Communication acts as the "nervous system" and "lifeblood" of an organization by integrating human efforts. The document outlines different types of communication based on direction, structure, and medium. It also discusses barriers to communication like semantic issues, psychological factors, organizational policies, and personal attitudes. Lastly, it presents the 7C's and 4S's of effective communication.