armchair vs rocking chair

armchair

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

  • Hypernyms: chair, furniture 

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. 

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. 

rocking chair

noun
  • A chair with a curved base which can be gently rocked (swung) back and forth. 

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