customer service vs submission

customer service

noun
  • The act of providing services to customers before, during and after a purchase. 

  • A department that provides services to existing customers. 

submission

noun
  • The act of submitting or giving e.g. a completed piece of work. 

  • The act of submitting or yielding; surrender. 

  • A submission hold in wrestling, mixed martial arts, or other combat sports. 

  • The thing which has been submitted. 

  • A subset or component of a mission. 

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