Over time, emoji meanings have become subjective, depending on a message's context and wider cultural trends. Which shaking smiley face should you use? Is there a difference between each different ...

Of the six billion emoji that are sent globally every day, around 70% are emotion based – for example, smiley face, love hearts. A smaller proportion of the emoji sent are sad expressions.

For example, >.< is a cute face in South Korea, but an angry face in Hungary - be careful who you’re sending them to! There is some evidence that emoticons are far older than the sideways smiley.