Refers to a diverse array of

Public relations
Public relations is the art and science of managing communication between an organization and its key publics to build, manage and sustain its positive image. Examples include:

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  Corporations use marketing public relations to convey information about the products they manufacture or services they provide to potential customers to support their direct sales efforts. Typically, they support sales in the short and long term, establishing and burnishing the corporation's branding for a strong, ongoing market.
  
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  Corporations also use public relations as a vehicle to reach legislators and other politicians, seeking favorable tax, regulatory, and other treatment, and they may use public relations to portray themselves as enlightened employers, in support of human-resources recruiting programs.
  
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  Nonprofit organizations, including schools and universities, hospitals, and human and social service agencies, use public relations in support of awareness programs, fund-raising programs, staff recruiting, and to increase patronage of their services.
  
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  Politicians use public relations to attract votes and raise money, and when successful at the ballot box, to promote and defend their service in office, with an eye to the next election or, at career's end, to their legacy.
  

Publishing
Publishing is the industry concerned with the production of literature or information – the activity of making information available for public view. In some cases, authors may be their own publishers.
Traditionally, the term refers to the distribution of printed works such as books and newspapers. With the advent of digital information systems and the Internet, the scope of publishing has expanded to include websites, blogs, and the like.
As a business, publishing includes the development, marketing, production, and distribution of newspapers, magazines, books, literary works, musical works, software, other works dealing with information.
Publication is also important as a legal concept; (1) as the process of giving formal notice to the world of a significant intention, for example, to marry or enter bankruptcy, and; (2) as the essential precondition of being able to claim defamation; that is, the alleged libel must have been published.