Is there any difference between article and paragraph writing?

if there what is  it?

Here are explanations on article and paragraph:

An article is a piece of writing about a particular subject in a newspaper or magazine. On the other hand, a paragraph is section of a piece of writing, usually consisting of several sentences dealing with a single subject. The first sentence of a paragraph starts on a new line.

An article consist of a series of ideas on one single topic which is not the case while writing a paragraph. An article might have more than a single paragraph while a paragraph has limitation of length. An article has a concluding paragraph whereas in a paragraph, there is a concluding sentence.