lose time vs push back

lose time

verb
  • to fall behind schedule. 

  • to go slow and not keep accurate time. 

push back

verb
  • To postpone. 

  • To refute or argue against a position or an accusation; to express one's own view on a situation. 

  • To summarily expel asylum seekers, especially in violation of the principle of non-refoulement. 

  • Used other than figuratively or idiomatically: see push, back. 

How often have the words lose time and push back occurred in a corpus of books? (source: Google Ngram Viewer )