What is a monocot and a dicot plant?

I have to do a project on my plant. It is a Spotted Chinese Evergreen.
Thanks!

http://www.ucmp.berkeley.edu/glossary/gloss8/monocotdicot.html

http://www.google.com/search?source=ig&hl=en&rlz=1G1GGLQ_ENUS360&q=Spotted+Chinese+Evergreen