crape vs roughen

crape

verb
  • To clothe in crape. 

  • To form into ringlets; to curl or crimp. 

noun
  • Mourning garments, especially an armband or hatband. 

roughen

verb
  • To make rough. 

  • To become rough. 

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