deletion vs offloading

deletion

noun
  • The act of deleting. 

  • An item that has been or will be deleted. 

  • An act of killing or murder. 

  • A mutation in which a gene, or other section of DNA, is removed from a chromosome. 

offloading

noun
  • The act by which something is offloaded. 

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