1. Formality Perspective
1.1. Formal communication
1.2. Informal communication
2. Channel Perspective
2.1. Decision Making Factors
2.2. Communication Medium
2.2.1. Face-to-Face Communication
2.2.2. Two-Way Remote Communication
2.2.3. Written Communication
2.2.4. Social Media Communication
2.2.5. One-Way Audio and Video Communication
3. Barriers
3.1. Physical Barriers
3.2. Language Barriers
3.3. Gender Barriers
3.4. Interpersonal Barriers
3.5. Perceptual Barriers
3.6. Cultural Barriers
3.7. Emotional Barriers
4. Project Perspective
4.1. Internal Communication
4.2. External Communication
5. Organizational Perspective
5.1. Vertical communication
5.1.1. Upward
5.1.1.1. Exchange information
5.1.1.2. Offer ideas
5.1.1.3. Express enthusiasm
5.1.1.4. Achieve job satisfaction
5.1.1.5. Provide feedback
5.1.2. Downward
5.1.2.1. Transmit vital information
5.1.2.2. Give instructions
5.1.2.3. Encourage 2-way discussion
5.1.2.4. Announce decisions
5.1.2.5. Seek cooperation
5.1.2.6. Provide motivation
5.1.2.7. Boost morale
5.1.2.8. Increase efficiency
5.1.2.9. Obtain feedback
5.2. Horizontal communication
5.2.1. Solving problems
5.2.2. Accomplishing tasks
5.2.3. Improving teamwork
5.2.4. Building goodwill
5.2.5. Boosting efficiency
5.3. Diagonal communication
6. Relationship building through communication
6.1. Identify the best communication tool
6.1.1. Levels of importance
6.1.2. Levels of authority
6.1.3. Levels of Stake