ottoman vs sofa

ottoman

noun
  • A low stool or thick cushion used to rest the feet or as a seat. 

  • An upholstered sofa, without arms or a back, sometimes with a compartment for storing linen etc. 

  • A fabric with a pronounced ribbed or corded effect, often made of silk or a mixture of cotton and silk-like yarns. 

sofa

noun
  • An upholstered seat with a raised back and one or two raised ends, long enough to comfortably accommodate two or more people. 

verb
  • To seat or lay down on a sofa. 

  • To furnish with one or more sofas. 

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