irreverent vs metaphysical

irreverent

adj
  • Lacking respect; not having or not showing respect for or seriousness towards something that is usually treated with respect; going against conventional precepts. 

metaphysical

adj
  • Being an adherent of the philosophy of metaphysics. 

  • Of or pertaining to metaphysics. 

  • Immaterial, supersensual, not physical (more properly, "beyond" that which is physical). 

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