What are barriers to communication?

What are barriers to communication?
Background noise, inability to speak the same language, accents or dialects, prejudices and hostilities. Or the ability of the communicating parties to understand the topic of conversation. These are just a few.

Differences in culture, language, and gender can be barriers to communication,
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The following are barriers of communication:

1. Language difference
2. Information overload
3. Inattention
4. Time pressure
5. Distraction / noise
6. Emotions
7. Complexity in organizational structure
8. Poor retention, inability to remember the information