flatulence vs guyver

flatulence

noun
  • The state of having gas, often smelly, trapped (and when released, frequently with noise) in the digestive system of a human and some other animals; wind; and when released, a flatus, a fart. 

  • The release of such gas; breaking wind. 

guyver

noun
  • Flattering talk; behaviour put on to impress or deceive; persiflage. 

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