Sit on their grave and talk to the empty air around you, hoping they can hear you.
Listen and communicate, that's the main key and point you need to get across.
is it true or false your ability to communicate effectively is known as what if your communication confidence?
Yes.
listening
unfortunately he has departed Most Haunted
make patients feel more comfortable and less threatened
You need to share a common language in order to communicate.
The vocabulary. If you understand vocabulary but not grammar, you can still communicate. If you only know grammar and not vocabulary, however, you will not be able to effectively communicate. To converse in a fluent manner, you need both components, though.
it allows an organisation to communicate effectively
When the pictures, video, or sound help to communicate the information more effectively. APEX
Well you obviously were NOT communicating effectively. To communicate effectively you need to have a good understanding of the language you are using to communicate with. If you had a good understanding of English you would know that "communicating effectively to" is not correct English. If you were communicating effectively using English you would have asked "How do you know you were effectively communicating with other staff" as your question.
Learning around 2,000-3,000 words should allow you to communicate in most situations. These words would cover common everyday vocabulary and provide a good foundation for understanding and expressing yourself effectively.