prune vs salami-slice

prune

verb
  • To cut down or shorten (by the removal of unnecessary material). 

  • To remove excess material from a tree or shrub; to trim, especially to make more healthy or productive. 

  • To remove unnecessary branches from a tree data structure. 

  • To become wrinkled like a dried plum, as the fingers and toes do when kept submerged in water. 

noun
  • The dried, wrinkled fruit of certain species of plum. 

  • Something wrinkly like a prune. 

  • An old woman, especially a wrinkly one. 

salami-slice

verb
  • To reduce (something) incrementally (for example, to cut a budget by gradually removing sums of money from it). 

  • To divide (something) into small groups or portions; specifically, to tackle (a big task, etc.) in incremental steps. 

How often have the words prune and salami-slice occurred in a corpus of books? (source: Google Ngram Viewer )