itemize vs specialize

itemize

verb
  • To state in items, or by particulars 

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 itemize and specialize occurred in a corpus of books? (source: Google Ngram Viewer )