pondering vs remiss

pondering

noun
  • An act of rumination or cogitation. 

remiss

adj
  • Not energetic or exact in duty or business; careless; tardy; slack; hence, lacking earnestness or activity; languid; slow. 

  • At fault; failing to fulfill responsibility, duty, or obligations. 

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