customer service vs transportation

customer service

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

  • A department that provides services to existing customers. 

transportation

noun
  • A means of conveyance. 

  • A ticket or fare. 

  • Deportation to a penal colony. 

  • The act of transporting, or the state of being transported; conveyance, often of people, goods etc. 

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