on course vs on target

on course

prep
  • Proceeding smoothly as planned. 

  • Following the intended route. 

  • Likely to happen or to undergo something. 

on target

prep
  • With accuracy. 

  • Towards the goal. 

  • Accurate, or accurately predicted. 

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