reflective vs solemn

reflective

adj
  • Reciprocal. 

  • Involving reflection. 

  • That reveals or shows; revealing; indicative of. 

  • That reflects, or redirects back to the source. 

  • Pondering, especially thinking back on the past. 

solemn

adj
  • Characterized by or performed with appropriate or great ceremony or formality. 

  • Of or pertaining to religious ceremonies and rites; (generally) religious in nature; sacred. 

  • Inspiring serious feelings or thoughts; sombrely impressive. 

  • Deeply serious and sombre; grave. 

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