counterword vs neologism

counterword

noun
  • A word (for example so) that is frequently used in a reflex-like manner in an answer and that has thereby quickly taken on a new, much less specific or much looser meaning or is even almost meaningless and performs a completely new function. 

  • Such a word (or a word that has gone through a similar change) when not used as a reflex-like answer. 

neologism

noun
  • A word or phrase which has recently been coined; a new word or phrase, or an existing one which has gained a new meaning. 

  • The introduction of new doctrine, for example in theology. 

  • The newly coined, meaningless words or phrases of someone with a psychosis, usually schizophrenia. 

  • The act or instance of coining, or uttering a new word. 

How often have the words counterword and neologism occurred in a corpus of books? (source: Google Ngram Viewer )