heedlessness vs mindfulness

heedlessness

noun
  • The state or character of being heedless 

mindfulness

noun
  • Awareness. 

  • Inclination to be mindful or aware. 

  • Paying attention on purpose, in the present moment, and non-judgementally. 

  • A form of secular meditation practice with roots in Buddhist meditation. 

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