Insert vs trio

Insert

noun
  • A key that when pressed switches between the overtype mode and the insert mode of a computer. 

trio

noun
  • A passage in the middle of a minuet, frequently in a different key. 

  • A piece of music written for three musicians. 

  • A group of three musicians. 

  • A group of three people or things. 

  • Any cocktail made with a spirit, a liqueur, and a creamy ingredient. 

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