solemn vs studious

solemn

adj
  • Inspiring serious feelings or thoughts; sombrely impressive. 

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

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

  • Deeply serious and sombre; grave. 

studious

adj
  • Favorable to study; suitable for thought and contemplation 

  • Given to thought, or to the examination of subjects by contemplation; contemplative. 

  • Planned with study; deliberate; studied. 

  • Dedicated to study; devoted to the acquisition of knowledge from books 

  • Earnest in endeavors; attentive; diligent 

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