slimline vs spartan

slimline

adj
  • Stripped of unnecessary features. 

  • Gracefully slim or slender. 

spartan

adj
  • Lacking in decoration and luxury. 

  • Resolute in the face of danger or adversity. 

  • Austere, frugal, characterized by self-denial. 

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