solemn vs unholy

solemn

adj
  • Deeply serious and sombre; grave. 

  • 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. 

unholy

adj
  • Dreadful, terrible, excessive, or otherwise atrocious. 

  • Not holy; (by extension) evil, impure, or otherwise perverted. 

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