Types of communication

Communication is a process of exchanging information, ideas,  thoughts, feelings and emotions through speech, signals, writing or  behaviour. It is necessary for building any kind of relations, for  example, a relationship between a patient and a doctor, between the  teacher and pupils, between the director of any enterprise and his  staff, between family members, etc. The communication between people  changes according to their functions, spheres, activities.
The main types of Communication are Verbal (Oral and Written) and Non-verbal Communication.
In  oral communication, spoken words are used. It includes face-to-face  conversations, telephone conversation, video, radio, television. One can  guess lots of things by oral communication (facial expression or body  language), but oral communication requires a quick reaction; you never  know beforehand what question you can be asked for.
Written  communication is something we do while writing, such as reports,  essays, emails, letters, notes, chats. The advantages of written  communications are the following: while you write you can edit or revise  what you are writing before it is sent or presented. You can save it  for further study. I think writing is more easy that speaking.
For  me, it is always easier to write than to talk about anything. While you  write, you don’t see the person whom you’re speaking, you can tell  secret things even to unknown people. I have found lots of friends from  different countries using written communication via mails and chats. The  disadvantages of written communications are that if you are presenting  something in a written form you do not know who will read it. This means  you will have to take more care of what you say and how you say it.
There  is another type of communication non-verbal communication. Besides  gestures, body language, tone of voice, facial expressions, it also  includes appearance, clothing, room design, decorations. Communication  can also be formal and informal. Formal communication is used during  corporate meetings, conferences, etc. In formal communication, slang is  not used and correct pronunciation is required. Informal Communication  is just a casual talk. It happens among friends and family. In informal  communication use of slang words is not restricted. Informal  communication helps in building relationships.