Protagonists vs Main Characters. Are they the same?

A friend found this fantastic article that should be read by all writers.

I never really thought about the divide between protagonist and main character. However, after having looked back at some of my books, there is definitely that separation with a few of them.

 

Enjoy!

http://www.helpingwritersbecomeauthors.com/protagonist-and-main-character-same-person-the-answer-may-transform-your-story/