déclassé vs insignificant

déclassé

adj
  • Degraded from one's social class. 

insignificant

adj
  • Not significant; not important, inconsequential, or having no noticeable effect. 

  • Without meaning; not signifying anything. 

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