Emojis. When they first broke onto the scene, they were known as Emoticons. They were little funny graphical representations of feelings and emotions. Hence the term Emoticon. You had to be using a smart phone to view them, or they just appeared as a strange combination of keystrokes.
Today they have evolved into a digital market of their own. Seems every company, media site, or university has their own set of emojis. Because of that, you need to check out this guide on how to use them, lest you embarrass yourself and make a social media faux pas.
Source: Your guide on how to use emojis