afro vs hairdressing

afro

noun
  • hairstyle characterized by tightly curled locks and a rounded shape. 

  • A person of African ancestry 

hairdressing

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

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