armchair vs sofa

armchair

noun
  • A chair with supports for the arms or elbows. 

  • Hypernyms: chair, furniture 

adj
  • Remote from actual involvement, including a person retired from previously active involvement. 

  • Unqualified or uninformed but yet giving advice, especially on technical issues, such as law, architecture, medicine, military theory, or sports; relating to such advice. 

verb
  • To create based on theory or general knowledge rather than data. 

  • To theorize based on analysis of data that was gathered previously; to reflect. 

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 armchair and sofa occurred in a corpus of books? (source: Google Ngram Viewer )