islet vs swatch

islet

noun
  • An isolated piece of tissue that has a specific function. 

  • A small island. 

swatch

noun
  • A clump or portion of something. 

  • A selection of such samples bound together. 

  • A piece, pattern, or sample, generally of cloth or a similar material. 

  • A channel or passage of water between sandbanks, or between a sandbank and a seashore. 

  • A demonstration, an example, a proof. 

verb
  • To create a swatch, especially a sample of knitted fabric. 

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