epithalamic vs matrimonial

epithalamic

adj
  • Of or pertaining to the epithalamus. 

  • Belonging to, or designed for, an epithalamium. 

matrimonial

adj
  • Of, or having to do with matrimony and marriage. 

noun
  • A classified advertisement describing an individual who wishes to find a marriage partner. 

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