habitable vs sufficient

habitable

adj
  • Safe and comfortable, where humans, or other animals, can live; fit for habitation. 

sufficient

adj
  • Of a type or kind that suffices, that satisfies requirements or needs. 

  • Possessing adequate talents or accomplishments; of competent power or ability; qualified; fit. 

det
  • A quantity (of something) that is as large as is needed. 

  • An adequate quantity of; enough. 

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