currycomb vs hairbrush

currycomb

noun
  • A comb or brush, having rubber or plastic teeth, used to groom horses. 

verb
  • To groom using such a comb. 

hairbrush

noun
  • A brush used in hair care for brushing, tidying, and detangling hair 

verb
  • To spank with a hairbrush. 

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