leading vs serving

leading

adj
  • Providing guidance or direction. 

  • Occurring in advance; preceding. 

  • Ranking first. 

noun
  • Vertical space added between lines; line spacing. 

  • An act by which one is led or guided. 

serving

noun
  • A layer added to the outside of an electrical cable to protect it. 

  • The act or process of serving. 

  • An instance of that act or process; also (usually, especially) the amount of food or drink for or served to one person; especially in relation to a meal. 

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