advisory vs helping

advisory

adj
  • Able to give advice. 

  • Containing advice; advising. 

noun
  • A warning. 

helping

noun
  • A portion or serving, especially of food that one takes for oneself, or to which one helps oneself. 

  • An amount or quantity 

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