Aggressor vs victimizer

Aggressor

noun
  • a citizen/subject of the fictional Aggressor state 

name
  • a fictional state created by the United States Army for maneuver and military exercise purposes in the 1950's 

victimizer

noun
  • One who victimizes. 

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