baffling vs unsolvable

baffling

adj

  • Puzzling, perplexing, bewildering. 

  • frustrating 

noun

  • An act of foiling or thwarting. 

unsolvable

adj

  • Not solvable. 

noun

  • A problem that cannot be solved. 

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