You think using words incorrectly is making new words
How do you manage to answer a phone without drowning in your own saliva?
*sigh*
Language is more than just words, it's how those words are used/understood by the people you're speaking to.
That's why the English used in Ye Olden Days is still English, and the English we speak now is still English.
Languages change and evolve over time

You pathetic little simpleton.

I'd instantly kill myself if I ever said banter/bantz in conversation.