mouser vs puma

mouser

noun
  • A cat that catches mice, kept specifically for the purpose. 

  • A moustache. 

puma

noun
  • Any feline belonging to the genus Puma. 

  • A woman in her 20s or 30s who seeks relationships with younger men; a younger cougar. 

  • A mountain lion or cougar (Puma concolor). 

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