Emoticon definition

Emoticons, or graphical images comprised of character keys, are used in email and Instant Messaging to convey an emotion. There are many, but here are a few examples:

The wink ;-) demonstrates humor, a joke, or something sarcastic.
The smile :-) signifies happiness, humor or fun.
The frown :-( indicates sadness or disappointment.

Use emoticons in moderation and never when professionalism is a priority.