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.

The internet is filled with memes, and one of the most recognizable faces in the emoji realm is the Nerd ... it features large spectacles, a toothy smile, and sometimes even buck teeth.

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 ...