last straw vs middle

last straw

noun

  • A small addition to a burden which causes it to exceed the capacity. 

middle

adj

  • Pertaining to the middle voice. 

  • Located in the middle; in between. 

  • Central. 

noun

  • A centre, midpoint. 

  • The part between the beginning and the end. 

  • The middle stump. 

  • The central part of a human body; the waist. 

  • The middle voice. 

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