ELI5: Explain Like I'm 5

Neologisms

Neologisms are new words created from existing words. They are a way of getting different expressions and ideas across. For example, the word "snacktastic" could mean something that is really tasty or yummy. Another example is "selfie" which means a self-portrait taken with a phone or camera. Neologisms can be useful when you want to express something in a new and interesting way.