igniter vs munition

igniter

noun
  • Any device that is used to ignite something, especially a fuel mixture, or a charge of explosive 

munition

noun
  • Bombs, rockets, missiles (complete explosive devices, in contrast to e.g. guns). 

  • Materials of war: armaments, weapons and ammunition. 

verb
  • To supply with munitions. 

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