austere vs roughspun

austere

adj
  • Lacking decoration; trivial; not extravagant or gaudy 

  • Grim or severe in manner or appearance 

roughspun

adj
  • Unpolished, rough and ready, uncultured, unsophisticated. 

  • Woven from a coarsely spun yarn, (usually also from a coarse material). 

noun
  • A garment made from roughly spun yarn or made from a coarse material. 

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