barricade vs obturate

barricade

verb
  • to close or block a road etc., using a barricade 

  • to keep someone in (or out), using a blockade, especially ships in a port 

noun
  • A barrier constructed across a road, especially as a military defence 

  • An obstacle, barrier, or bulwark. 

  • A place of confrontation. 

obturate

verb
  • To block up or obstruct. 

  • To stop up (a gun breech) so as to prevent the escape of gas when firing. 

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