neologism

a new word, expression, or usage

the creation or use of new words or senses
SYN - coinage

"The urbandictionary was a hot bed of neologism."

"What made Nietzsche great is he understood the form and power of words and used neologisms that he new would reach into the public sphere - literally forcing his philosophy into the culture."

"He prided himself on the neologisms contained in his speech."

"George Bush is infamous for the accidental neologisms in his speeches."