The document discusses the different functions of communication:
1) Regulation or control - Communication regulates behavior and activities through hierarchies and policies like in a workplace.
2) Social interaction - Communication forms social relationships and bonds through interaction.
3) Motivation - Communication informs people on performance and goals to motivate improvement.
4) Information - Sharing information through communication improves decision making for individuals and groups.
5) Emotional expression - Communication is used to express emotions through facial expressions and gestures.