Xbee shield vs xbee breakout board

Hi, I am new to Arduino and I just want to ask if there is a difference using a xbee shield and a xbee breakout board?

Thank you! :)

A Shield is a board that plugs into the Arduino and has connectors ready to accept an Xbee module


A breakout board has connectors for a Xbee module and a series of output pins for testing or mounting on your own custom board. http://www.ebay.co.uk/itm/2-PCS-XBee-Adapter-Shield-Breakout-Board-For-XBee-Module-/191834021164?