This document discusses various barriers to communication. It identifies physical, perceptual, emotional, cultural, language, gender, and interpersonal barriers. Physical barriers include closed doors and separate work areas. Perceptual barriers arise from differences in individual perspectives and experiences. Emotional barriers, like vulnerability, fear, and stress, are among the strongest barriers. Cultural barriers result from differences across cultures. Language barriers can occur when communicating across languages. Gender and interpersonal barriers also impede effective communication.