bark beetle vs typographer

bark beetle

noun
  • Any of various beetles, of the subfamily Scolytinae, many of which reproduce in the inner bark of trees. 

typographer

noun
  • a kind of bark beetle, Ips typographus. 

  • a person skilled in typography 

  • a typewriter 

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