pannier vs trundle bed

pannier

noun
  • A large basket or bag fastened, usually in pairs, to the back of a bicycle or pack animal, or carried in pairs over the shoulders. 

  • One of a pair of hoops used to expand the volume of a woman's skirt to either side. 

  • A breadbasket. 

  • A piece of basketwork for protecting archers, or, filled with gravel or sand, for forming and protecting embankments, etc. 

  • A decorative basket for the display of flowers or fruits. 

trundle bed

noun
  • A low bed, designed to be rolled/stored away, usually on casters, under a higher bed, e.g. for temporary use by guests. 

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