Pinhead vs flimsy

Pinhead

noun

  • A member of the Provisional IRA. 

flimsy

noun

  • A banknote. 

  • Skimpy underwear. 

  • A service certificate 

  • Thin typing paper used to make multiple copies. 

adj

  • Likely to bend or break under pressure. 

  • Weak; ill-founded. 

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