Talking in words that the other person understands
Adaptation for communication needs (interpreter, visual aids etc)
Active listening
Loud, uncomfortable and public environment for communication
Giving good eye contact
Jargon, slang and acronyms
Lack of problem solving for special communication needs or specific health conditions
Being empathetic and respectful
Finding a private, quiet and well-lit environment
Lack of empathy or respect for differences
Lack of eye contact, hostile body language
Making assumptions of what the other person understands