POST vs capstone

POST

verb
  • To successfully perform a power-on self-test. 

noun
  • An HTTP request method used to send an arbitrary amount of data to a web server. 

capstone

verb
  • To complete as a crowning achievement; to top off. 

  • To train in the Capstone Military Leadership Program. 

noun
  • A crowning achievement, culmination or finishing touch. 

  • Any of the stones making up the top layer of a wall; a coping stone. 

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