hygge vs softheartedness

hygge

noun

  • Cosiness, comfort, contentment, conviviality. 

adj

  • Cosy, convivial. 

softheartedness

noun

  • The state or condition of being softhearted; sentimental tenderness. 

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