baffling vs unexplained

baffling

adj

  • Puzzling, perplexing, bewildering. 

  • frustrating 

noun

  • An act of foiling or thwarting. 

unexplained

adj

  • Not explained; of unknown cause or origin. 

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