crucify vs slag off

crucify

verb
  • To punish or otherwise express extreme anger at, especially as a scapegoat or target of outrage. 

  • To execute (a person) by nailing to a cross. 

  • To thoroughly beat at a sport or game. 

slag off

verb
  • To talk insultingly to or about someone or something; usually one who is not present. 

  • To purify by melting and removing slag. 

How often have the words crucify and slag off occurred in a corpus of books? (source: Google Ngram Viewer )