befoul vs muss

befoul

verb
  • To stain or mar (for example with infamy or disgrace). 

  • To entangle or run against so as to impede motion. 

  • To make foul; to soil; to contaminate, pollute. 

  • To defecate on, to soil with excrement. 

muss

verb
  • To rumple, tousle or make (something) untidy. 

noun
  • A mess (disagreeable mixture or confusion of things; disorder) 

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