keek vs skelly

keek

verb

  • To peek; peep. 

noun

  • A look, especially a quick one; a peek. 

skelly

verb

  • To squint. 

noun

  • A skeleton, especially a human one. 

  • A squint. 

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