This document discusses communication and provides definitions, models, and factors that influence communication. It notes that communication allows the sharing of knowledge and experiences, and involves processes of sending and receiving messages through various channels. Key aspects that influence communication include nonverbal cues like tone of voice, body language, and facial expressions which account for 50% of the message, while words only account for 10%. The document also outlines barriers to effective communication such as language differences, noise, distractions, and lack of interest.