This document discusses various barriers to communication. There are 5 main categories of barriers: 1) Physical barriers such as noise, time, distance, age, gender etc. that interfere with message transmission. 2) Semantic barriers due to lack of common language, differing interpretations, poor vocabulary. 3) Socio-psychological barriers like attitudes, emotions, closed-mindedness that influence understanding. 4) Choosing the wrong medium to convey a message. 5) Different perceptions of reality due to individual abstraction, inferences, and evaluations of situations. Overcoming barriers requires awareness of these filters and finding ways to ensure shared understanding.