on target vs on track

on target

prep
  • Accurate, or accurately predicted. 

  • Towards the goal. 

  • With accuracy. 

on track

prep
  • Proceeding as planned, as expected, or in a manner consistent with an established pattern. 

  • On a well-defined promotion path in an organisation, usually tenure. 

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