atlas vs softcover

atlas

noun
  • A rich satin fabric. 

  • One who supports a heavy burden; mainstay. 

  • A bound collection of maps often including tables, illustrations or other text. 

  • The uppermost vertebra of the cervical spine in the neck in humans and some other animals. 

  • A bound collection of tables, illustrations etc. on any given subject. 

  • A family of coordinate charts that cover a manifold. 

  • A detailed visual conspectus of something of great and multi-faceted complexity, with its elements splayed so as to be presented in as discrete a manner as possible whilst retaining a realistic view of the whole. 

  • A sheet of paper measuring 26 inches by 34 inches. 

  • A figure of a man used as a column. 

softcover

noun
  • A book having such covers. 

adj
  • Having covers made of paper or thin cardboard; paperback. 

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