loiter vs postpone

loiter

verb
  • To remain at a certain place instead of moving on. 

  • To stand about without any aim or purpose; to stand about idly. 

  • For an aircraft to remain in the air near a target. 

noun
  • A standing or strolling about without any aim or purpose. 

postpone

verb
  • To delay or put off an event, appointment, etc. 

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