marriageable vs underdeveloped

marriageable

adj
  • Suitable for marriage; nubile. 

noun
  • One who is suitable for marriage. 

underdeveloped

adj
  • immature and not fully developed 

  • having a low level of economic productivity and technological sophistication 

  • of a film that has had insufficient development before being fixed 

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