rehearse vs specialize

rehearse

verb
  • To narrate; to relate; to tell. 

  • To contrive and carefully prepare (a story, etc.) to offer consistency. 

  • To repeat, as what has been already said; to tell over again; to recite. 

  • To practise by recitation or repetition in private for experiment and improvement, prior to a public representation, especially in theater 

  • To cause to rehearse; to instruct by rehearsal. 

specialize

verb
  • To specify: to mention specifically. 

  • To become distinct or separate from what is common 

  • To focus one's study upon a particular skill, field, topic, or genre. 

  • To make distinct or separate due to form or function. 

  • To narrow in scope. 

  • To be known or notorious for some specialty. 

  • To focus one's business upon a particular item or service. 

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