camouflage clothing vs khakis

camouflage clothing

khakis

noun
  • Khaki-coloured/colored cotton trousers (pants). 

  • A khaki uniform of pants (trousers) or shorts, shirt, and hat or other head covering such as a turban. 

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