inject vs insert

inject

verb
  • To push or pump (something, especially fluids) into a cavity or passage. 

  • To introduce (code) into an existing program or its memory space, often without tight integration and sometimes through a security vulnerability. 

  • To take or be administered something by means of injection, especially medicine or drugs. 

  • To introduce (something) suddenly or violently. 

  • To administer an injection to (someone or something), especially of medicine or drugs. 

  • To introduce or add (something that is different or foreign). 

insert

verb
  • To put in between or into. 

noun
  • A sequence of DNA inserted into another DNA molecule. 

  • A close-up shot used to draw attention to a particular element of a larger scene. 

  • A plug-in that adds an effect to an audio track. 

  • A pre-recorded segment included as part of a live broadcast. 

  • An image inserted into text. 

  • An expression, such as "please" or an interjection, that may occur at various points in an utterance. 

  • A mechanical component inserted into another. 

  • A promotional or instructive leaflet inserted into a magazine, newspaper, tape or disk package, etc. 

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