jot vs plug nickel

jot

noun
  • A small amount, bit; the smallest amount. 

  • Iota; the smallest letter or stroke of any writing. 

  • A brief and hurriedly written note. 

verb
  • To write quickly. 

plug nickel

noun
  • A nearly worthless amount. 

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