knack vs push and shove

knack

noun
  • A petty contrivance; a toy. 

  • A readiness in performance; aptness at doing something. 

  • Something performed, or to be done, requiring aptness and dexterity. 

verb
  • To speak affectedly. 

push and shove

noun
  • Inconsiderate and unregulated behaviour. 

verb
  • To use one's strength to force oneself through a crowded area. 

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

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