anticipation vs thoughtlessness

anticipation

noun
  • Prepayment of a debt, generally in order to pay less interest. 

  • A non-harmonic tone that is lower or higher than a note in the previous chord and a unison to a note in the next chord. 

  • Prolepsis. 

  • The act of anticipating, taking up, placing, or considering something beforehand, or before the proper time in natural order. 

  • The eagerness associated with waiting for something to occur. 

thoughtlessness

noun
  • heedless disregard for the consequences of one's actions 

  • disregard for other's feelings 

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