ducktail vs hairdressing

ducktail

noun
  • A hairstyle in which the hair is swept back into an upturned point at the back. 

hairdressing

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

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