giving vs manna

giving

noun
  • A gift; a benefaction. 

  • The act of bestowing as a gift; a conferring or imparting. 

  • The act of softening, breaking, or yielding. 

adj
  • having the tendency to give; generous 

manna

noun
  • Any boon which comes into one's hands by good luck. 

  • Food miraculously produced for the Israelites in the desert in the book of Exodus. 

  • The sugary sap of the manna gum tree which oozes out from holes drilled by insects and falls to the ground around the tree.http://www.museum.vic.gov.au/forest/plants/gum.html 

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