nuchal vs slummock

nuchal

noun
  • The back of the neck. 

  • A neck scale, especially of a lizard. 

adj
  • Of or pertaining to the back or nape of the neck. 

slummock

noun
  • A slovenly person 

verb
  • To behave awkwardly or clumsily 

  • To behave lazily or indolently 

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