Vietcong vs honours

Vietcong

name
  • A communist organization and guerrilla army in South Vietnam and Cambodia that fought the United States, South Korea, Australia, and the South Vietnamese government during the Vietnam War and was supported by communist North Vietnam. 

noun
  • A member of this organization. 

honours

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