Electron Affinity and Ionization Energy?

Here I will attempt to break these two concepts into EXTREMELY simple and basic terms.

Electron Affinity: How likely a neutral atom is to gain an electron

http://www.chemguide.co.uk/atoms/properties/eas.html

Ionization Energy: Basically the opposite of electron affinity, this refers to how likely (how much energy it takes) an atom is to release an electron.

http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch7/ie_ea.html

Here is a video on these topics.