extrude vs get rid of

extrude

verb
  • To expel; to drive off. 

  • To push or thrust out. 

  • To form or shape (a metal, plastic etc.) by forcing it through a die or an opening. 

get rid of

verb
  • to rid oneself of; dispose (of); to remove; to abolish; to lose 

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