niche vs reformatory

niche

adj
  • Pertaining to or intended for a market niche; having specific appeal. 

noun
  • Specifically, a cremation niche; a columbarium. 

  • Any position of opportunity for which one is well-suited, such as a particular market in business. 

  • A cavity, hollow, or recess, generally within the thickness of a wall, for a statue, bust, or other erect ornament. 

  • Any similar position, literal or figurative. 

  • A function within an ecological system to which an organism is especially suited. 

  • An arrow woven into a prayer rug pointing in the direction of qibla. 

verb
  • To specialize in a niche, or particular narrow section of the market. 

  • To place in a niche. 

reformatory

adj
  • Of, pertaining to, or conducive to reform; reformative. 

noun
  • A prison, especially one for juveniles; a reform school. 

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