carpet sweeper vs feather duster

carpet sweeper

noun
  • A mechanical (not electric) device for cleaning carpets by means of a rotating brush. 

feather duster

noun
  • An implement, traditionally consisting of a bundle of feathers (especially ostrich feathers) attached to a handle, used to remove surface dust. 

How often have the words carpet sweeper and feather duster occurred in a corpus of books? (source: Google Ngram Viewer )