feels vs rueful

feels

adj
  • Synonym of emotional 

noun
  • Feelings, emotions 

rueful

adj
  • Causing, feeling, or expressing regret or sorrow, especially in a wry or humorous way. 

  • Inspiring pity or compassion. 

  • Bad; woeful; deplorable. 

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