Here's a breakdown of these terms:
* Opinion piece: This is a general term for any written work that expresses the author's personal viewpoint on a topic. It can be found in newspapers, magazines, blogs, and online publications.
* Op-ed: This term stands for "opposite the editorial page" and is used for opinion pieces that are published in newspapers. They are usually found on the page opposite the editorial page, which is where the newspaper's official opinion is expressed.
* Editorial: This is a piece written by the editorial board of a newspaper or magazine expressing their official opinion on a topic. It is typically intended to influence public opinion.
While all three terms refer to pieces expressing personal opinions, they have slightly different connotations. An opinion piece is the broadest term and can refer to any piece expressing personal views. An op-ed specifically refers to an opinion piece published in a newspaper. An editorial refers to a piece written by the editorial board of a publication and represents the official opinion of the publication.