pillion vs squab

pillion

noun
  • The cushion of a saddle. 

  • The person riding in the pillion. 

  • A similar second saddle on a motorcycle for a passenger. 

  • A pad behind the saddle of a horse for a second rider. 

verb
  • To ride on a pillion. 

  • To put a pillion on a horse. 

adv
  • Riding behind the driving rider, as when positioned on the rump of a mount. 

squab

noun
  • A thick cushion, especially a flat one covering the seat of a chair or sofa. 

  • A baby rook. 

  • A baby pigeon, dove, or chicken. 

  • The meat of such a baby bird used as food. 

  • A person of a short, fat figure. 

adj
  • Unfledged; unfeathered. 

  • Curt; abrupt. 

  • Fat; thick; plump; bulky. 

  • Shy; coy. 

  • Clumsy. 

adv
  • With a heavy fall; plump. 

verb
  • To stuff thickly and sew through, the stitches being concealed by buttons, etc. 

  • To furnish with squabs, or cushions. 

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