minimalist vs rigid

minimalist

adj
  • Believing in or seeking a minimal state; seeking to minimize or reduce to a minimum. 

noun
  • One who believes in or seeks a minimal state; one who seeks to minimize or reduce to a minimum. 

rigid

adj
  • Uncompromising. 

  • Stiff, rather than flexible. 

  • Fixed, rather than moving. 

  • Rigorous and unbending. 

noun
  • An airship whose shape is maintained solely by an internal and/or external rigid structural framework, without using internal gas pressure to stiffen the vehicle (the lifting gas is at atmospheric pressure); typically also equipped with multiple redundant gasbags, unlike other types of airship. 

  • A bicycle with no suspension system. 

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