attention vs unconcern

attention

noun
  • Mental focus. 

  • A technique in neural networks that mimics cognitive attention, enhancing the important parts of the input data while giving less priority to the rest. 

  • An action or remark expressing concern for or interest in someone or something, especially romantic interest. 

  • A state of alertness in the standing position. 

intj
  • A call for people to be quiet/stop doing what they are presently doing and pay heed to what they are to be told or shown. 

  • Used as a command to bring soldiers to the attention position. 

unconcern

noun
  • Freedom from worry or apprehensiveness; insouciance or nonchalance. 

  • Lack of interest or care; indifference or apathy. 

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