Journalism refers to the production and distribution of reports on recent events. The word journalism applies to the occupation (professional or not), the methods of gathering information and organising literary styles. Journalistic mediums include print, television, radio, Internet and in the past: newsreels.
Publishing is the dissemination of literature, music, or information—the activity of making information available to the general public. In some cases, authors may be their own publishers, meaning originators and developers of content also provide media to deliver and display the content for the same. Also, the word publisher can refer to the individual who leads a publishing company or an imprint or to a person who owns/heads a magazine.
As for modern Journalism, its not my business to defend it. It justifies its own existence by the great Darwinian principle of the survival of the vulgarest.
Oscar Wilde, The Critic as Artist Part I (1891), [7]
Only a newspaper! Quick read, quick lost, Who sums the treasure that it carries hence? Torn, trampled under feet, who counts thy cost, Star-eyed intelligence?
But I account the use that a man should seek of the publishing of his own writings before his death, to be but an untimely anticipation of that which is proper to follow a man, and not to go along with him.
Francis Bacon, An Advertisement Touching a Holy War, Epistle Dedicatory.