Y-shaped vs crooked

Y-shaped

adj
  • Shaped like the capital letter "Y". 

crooked

adj
  • Not straight; having one or more bends or angles. 

  • Set at an angle; not vertical or square. 

  • Dishonest or illegal; corrupt. 

How often have the words Y-shaped and crooked occurred in a corpus of books? (source: Google Ngram Viewer )