foresight vs pilotage

foresight

noun
  • the front sight on a rifle or similar weapon 

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

  • a bearing taken forwards towards a new object 

pilotage

noun
  • The use of landmarks to guide a vessel or aircraft to its destination. 

  • The occupation of a pilot. 

  • The fee paid to a pilot. 

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