Writers write something, and then they change it. Then they change it again. They keep changing it until they feel they get it right. There are different kinds of writers. Newswriters write for newspapers or news broadcasts.
Columnists write about people, places, and things.
Editorial writers write how they feel about something. Technical writers take hard subjects and make them easy to read. Copy writers write ads. Editors write, too. They also review, rewrite, and change the words of writers.