forethought vs heedlessness

forethought

noun
  • Anticipation. 

  • Provident care; prudence. 

  • Thinking beforehand or in advance, planning; prior or previous consideration; premeditation. 

adj
  • Thought of, or planned, beforehand. 

heedlessness

noun
  • The state or character of being heedless 

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