Well, for one thing you would not be able to ask this question and hope to get an answer!
Communication is how we relay information to others. Think of all the information you pass along and receive during your life:
- information about danger, like "Don't cross that old bridge"
- information about comfort, like "Wear your raincoat today"
- Information about how to do something, like "Here is how to tie your shoes"
- Information about necessary things, like "This is safe to eat" or "This stream is safe to drink from"
- Information about entertainment, like stories or plays or movies or anything interesting!