aid vs service

aid

noun
  • Something which helps; a material source of help. 

  • Help; assistance; succor, relief. 

  • An historical subsidy granted to the crown by Parliament for an extraordinary purpose, such as a war effort. 

  • A helper; an assistant. 

  • An exchequer loan. 

  • A pecuniary tribute paid by a vassal to his feudal lord on special occasions. 

  • The rider's use of hands, legs, voice, etc. to control the horse. 

verb
  • To climb with the use of aids such as pitons. 

  • To provide support to; to further the progress of; to help; to assist. 

service

noun
  • An act of being of assistance to someone. 

  • The materials used for serving a rope, etc., such as spun yarn and small lines. 

  • The act of initially starting, or serving, the ball in play in tennis, volleyball, and other games. 

  • A musical composition for use in churches. 

  • The military. 

  • A taxi shared among unrelated passengers, each of whom pays part of the fare; often, it has a fixed route between cities. 

  • A function that is provided by one program or machine for another. 

  • A department in a company, an organization, a government department, etc. 

  • The serving, or delivery, of a summons or writ. 

  • The state of being subordinate to or employed by an individual or group 

  • The sorb; the fruit of this tree. 

  • Access to resources such as hotel rooms and web-based videos without transfer of the resources' ownership. 

  • A set of dishes or utensils. 

  • A religious rite or ritual. 

  • The practice of providing such a service as economic activity. 

  • Service tree. 

verb
  • To serve. 

  • To perform maintenance. 

  • To supply (media outlets) with press releases etc. 

  • To inseminate through sexual intercourse. 

  • To perform a sexual act upon. 

  • To attack. 

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