defensive vs invasion

defensive

adj
  • Intended for defence; protective. 

  • In a state or posture of defense. 

  • Of a bowling or fielding tactic designed to prevent the other side from scoring runs; of a batting tactic designed to prevent being out. 

  • Performed so as to minimise risk. 

  • Displaying an inordinate sensitivity to criticism or intrusion; oversensitive; thin-skinned. 

  • Pertaining to defense, as opposed to attack. 

  • Intended to deter attack. 

noun
  • A means, attitude or position of defense. 

invasion

noun
  • A military action consisting of armed forces of one geopolitical entity entering territory controlled by another such entity, generally with the objective of conquering territory or altering the established government. 

  • The breaching of the skin barrier. 

  • The spread of cancer cells, bacteries and such to the organism. 

  • The entry without consent of an individual or group into an area where they are not wanted. 

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