Cognitive Biases -- Your brain is playing tricks on you

I am sceptical sometimes when people claim they know something because of a "gut feeling".

If gut feelings are from the body, and the body perceived through the five senses as processed by the brain, then "gut feelings" may not be as reliable as people believe they are.

http://www.scribd.com/documents/30548590/Cognitive-Biases-A-Visual-Study-Guide-by-the-Royal-Society-of-Account-Planning

Is there a difference between "gut feelings" and "intuition"?