argue vs swear to

argue

verb
  • To have an argument, a quarrel. 

  • To debate, disagree, or discuss opposing or differing viewpoints. 

  • To present (a viewpoint or an argument therefor). 

  • To show grounds for concluding (that); to indicate, imply. 

swear to

How often have the words argue and swear to occurred in a corpus of books? (source: Google Ngram Viewer )