pucker vs ruck up

pucker

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

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

  • A fold or wrinkle. 

ruck up

verb
  • To form untidy creases or folds in an article of clothing. 

  • To be brave, to show some courage, to keep moving forward in a difficult situation. 

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