Communication can be categorized into the following types

• Internal communication:

The process of exchanging information between the persons within the organization is called internal communication. The information, ideas, facts etc. are transferred from sender to receiver in the same organization. It takes place across all levels and organizational units of an organization.

• External communication:

The process of exchanging information between the persons of various organizations is called the external organization. The information ideas, facts etc. are transferred from one organization to another organization. Examples of these people and entities include customers, potential customers, suppliers, investors , shareholders, and society.

• Written Communication:

The transformation of information through written words is called written communication. The information under written communication can be in the form of notes, memos, letters, forms, notices, invoices, reports, brochures, e-mail, fax etc.

• Oral Communication:

The exchange information through words and sounds is called oral communication. The information is passed from one place to another by speaking. The oral communication is done through mechanical devices such as telephone, intercom, dictating machine, loudspeakers, voice mails etc.