To publish means to make a literary work available to the public, typically by printing it in book form or in a newspaper or magazine, or by making it available online.
In the past, writing and publishing were two distinct processes. Authors would first write their works, and then they would have to find a publisher who was willing to print and distribute them. However, with the advent of the internet, it is now possible for authors to publish their own works, without the need for a traditional publisher.
There are several reasons why someone might choose to write and publish something. Some people write simply for the pleasure of it, while others use writing as a way to express themselves or to communicate their ideas. Still others write in order to educate or inform the public, or to make a difference in the world.
No matter what the reason, writing and publishing can be a powerful way to communicate ideas and to connect with others.