overview vs summary

overview

noun
  • A brief summary, as of a book or a presentation. 

  • An inspection. 

verb
  • To engage in an overview; to provide a brief summary. 

summary

noun
  • An abstract or a condensed presentation of the substance of a body of material. 

adj
  • Performed speedily and without formal ceremony. 

  • Concise, brief or presented in a condensed form 

  • Performed by skipping the procedures of a standard and fair trial. 

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