apt vs on target

apt

noun
  • An apartment; a flat. 

adj
  • Ready; especially fitted or qualified (to do something); quick to learn. 

  • Suitable; appropriate; fit or fitted; suited. 

  • Having a habitual tendency; habitually liable or likely; disposed towards. 

on target

prep
  • Towards the goal. 

  • With accuracy. 

  • Accurate, or accurately predicted. 

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