conjugal vs hymeneal

conjugal

adj
  • Of or relating to marriage, or the relationship of spouses; connubial. 

hymeneal

adj
  • Pertaining to marriage. 

  • Of or pertaining to the hymen. 

  • Pertaining to sexual relations. 

noun
  • A hymn, song or poem in honour of a wedding. 

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