barber vs barber's

barber

noun
  • A person whose profession is cutting (usually male) customers' hair and beards. 

  • A barber surgeon, a foot soldier specializing in treating battlefield injuries. 

  • A storm accompanied by driving ice spicules formed from sea water, especially one occurring on the Gulf of St. Lawrence; so named from the cutting ice spicules. 

verb
  • To cut the hair or beard of (a person). 

  • To chatter, talk. 

barber's

noun
  • Synonym of barbershop (“place of business of a barber”). 

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