who cares vs wow

who cares

phrase
  • A reply that diminishes the importance of another speaker's immediately preceding statement. 

  • A reply to an unimportant or irrelevant statement, indicating indifference on the part of the speaker. 

wow

intj
  • An expression of amazement, awe, or admiration. 

  • An indication of excitement, surprise, astonishment, or pleasure. 

  • Used sarcastically to express disapproval of something. 

noun
  • Anything exceptionally surprising, unbelievable, outstanding, etc. 

  • A relatively slow form of flutter (pitch variation) which can affect both gramophone records and tape recorders. 

verb
  • To amaze or awe. 

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