muck vs poo

muck

noun
  • Semen. 

  • Heroin. 

  • Soft (or slimy) manure. 

  • The pile of discarded cards. 

  • Anything filthy or vile. Dirt; something that makes another thing dirty. 

  • Grub, slop, swill 

  • Slimy mud, sludge. 

verb
  • To manure with muck. 

  • To shovel muck. 

  • To vomit. 

  • To do a dirty job. 

  • To pass, to fold without showing one's cards, often done when a better hand has already been revealed. 

poo

noun
  • Feces. 

  • Champagne. 

  • Cannabis resin. 

  • A poodle crossbreed. 

  • A piece of feces or an act of defecation. 

verb
  • To defecate. 

  • To dirty something with feces. 

intj
  • Expressing annoyance, frustration, etc.: a minced oath for 'shit'. 

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