Simple Definition:

An article is a written piece of information that is published in a newspaper, magazine, or online. It typically discusses a particular topic or event and provides facts, opinions, or analysis [explanation or interpretation of something]. Examples of articles include news stories, feature articles, and opinion pieces [an article expressing the writer’s personal view].

Very Simple Definition:

An article is a piece of writing that tells us about something. We can find articles in newspapers, magazines, or on the internet. For example, we can read an article about a new restaurant opening or a famous person’s life.