half-cracked vs unconventional

half-cracked

adj

  • crazy; demented 

unconventional

adj

  • Atypical 

  • Not adhering to convention or accepted standards 

  • Out of the ordinary 

noun

  • Something or someone that is unconventional. 

How often have the words half-cracked and unconventional occurred in a corpus of books? (source: Google Ngram Viewer )