foresight vs forethought

foresight

noun
  • The ability to foresee or prepare wisely for the future. 

  • a bearing taken forwards towards a new object 

  • the front sight on a rifle or similar weapon 

forethought

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

  • Anticipation. 

  • Provident care; prudence. 

adj
  • Thought of, or planned, beforehand. 

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