combing vs hairdressing

combing

noun
  • Individual hairs that drop out when the hair is combed. 

  • The act by which something is combed. 

hairdressing

noun
  • The washing, colouring, cutting and styling of the hair; the art or trade of a hairdresser. 

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