spousal vs unmarriageable

spousal

adj
  • of or relating to marriage 

  • of or relating to a spouse, spouses; to the relationship between spouses 

unmarriageable

adj
  • Not marriageable, unsuitable for marriage. 

  • That cannot be reconciled, inconsistent. 

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