hair dryer vs tumble dryer

hair dryer

noun
  • An electric device for drying hair by blowing hot air on it; a blow-dryer. 

tumble dryer

noun
  • An electrical device that dries clothes in a rotating drum which tumbles the clothes in a flow of hot air. 

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