Germ vs wag

Germ

noun
  • a German person. 

wag

noun
  • A witty person. 

  • An oscillating movement. 

verb
  • To swing from side to side, such as of an animal's tail, or someone's head, to express disagreement or disbelief. 

  • To play truant from school. 

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