gulp down vs pump out

gulp down

verb
  • To drink very quickly, swallowing large quantities of liquid at a time. 

  • To believe without questioning; to swallow. 

  • To eat very quickly without chewing the food properly. 

pump out

verb
  • to remove liquid using a pump 

  • to produce in large quantities 

How often have the words gulp down and pump out occurred in a corpus of books? (source: Google Ngram Viewer )