nightmare vs pucker

nightmare

noun
  • Any bad, miserable, difficult or terrifying situation or experience that arouses anxiety, terror, agony or great displeasure. 

  • A very bad or frightening dream. 

  • A feeling of extreme anxiety or suffocation experienced during sleep; Sleep paralysis. 

verb
  • To have a nightmare. 

pucker

noun
  • A state of perplexity or anxiety; confusion; bother; agitation. 

  • A fold or wrinkle. 

verb
  • To pinch or wrinkle; to squeeze inwardly, to dimple or fold. 

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