amenity vs unsociability

amenity

noun
  • Pleasantness. 

  • A thing or circumstance that is welcome and makes life a little easier or more pleasant. 

  • Convenience. 

  • a unit pertaining to the infrastructure of a community, such as a public toilet, a postbox, a library, etc. 

unsociability

noun
  • The state or quality of being unsociable. 

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