spiritual vs substantial

spiritual

adj
  • Consisting of spirit; not material; incorporeal. 

  • Of or pertaining to the spirit or the soul. 

  • Of or relating to the intellectual and higher endowments of the mind; mental; intellectual. 

  • Not lay or temporal; relating to sacred things; ecclesiastical. 

  • Of or pertaining to spirits; supernatural. 

  • Of or pertaining to God or a place of worship; sacred, pure; (Christianity, specifically) inspired by the Holy Spirit. 

noun
  • A Christian religious song, especially one in an African-American style, or a similar non-religious song. 

  • Any spiritual function, office, or affair. 

substantial

adj
  • Having a substance; actually existing. 

  • Most important; essential. 

  • Not imaginary; real; actual; true; veritable. 

  • Corporeal; material; firm. 

  • Possessed of goods or an estate; moderately wealthy. 

  • Satisfying; having sufficient substance to be nourishing or filling. 

  • Large in size, quantity, or value; ample; significant. 

  • Having good substance; strong; stout; solid; firm. 

noun
  • Anything having substance; an essential part. 

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