blockish vs thickheaded

blockish

adj
  • Lacking understanding; stupid; obtuse; dull. 

  • Like a block in shape or nature; coming across as a block. 

  • Rude; clumsy; rough. 

thickheaded

adj
  • stupid, obtuse or dumb. 

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