hollow-hearted vs truthful

hollow-hearted

adj
  • Yearning. 

  • Having a hole at the center. 

  • insincere; deceitful; treacherous; hypocritical. 

truthful

adj
  • Honest, and always telling the truth. 

  • Accurately depicting what is real. 

How often have the words hollow-hearted and truthful occurred in a corpus of books? (source: Google Ngram Viewer )