kiasi vs yellowbelly

kiasi

noun
  • A kiasi person. 

adj
  • Unwilling to take a chance for fear that something bad or unfavourable will happen; cowardly. 

yellowbelly

noun
  • Someone from Lincolnshire. 

  • A coward. 

  • The golden perch, Macquaria ambigua. 

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