You can create AutoText entries in both Word documents and the Outlook editor (ALT+F3) - see also
https://www.outlook-apps.com/autotext-in-outlook-2013/
They are however stored separately by default.
You can create autocorrect entries in Word and Outlook also and this may be what you were referring to -
http://www.cnet.com/how-to/fast-acce...rrect-options/