localized vs regional

localized

adj
  • Limited to a particular area; in a local vicinity only. 

  • Having undergone localization. 

regional

adj
  • Of a state or other geographic area, those parts which are not metropolitan, but are somewhat densely populated and usually contain a number of significant towns. 

  • Of, or pertaining to, one part of the body. 

  • Of, or pertaining to, a specific region or district. 

  • Of, or pertaining to, a large geographic region. 

noun
  • An entity or event with scope limited to a single region. 

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