crisis vs rivet

crisis

noun
  • A crucial or decisive point or situation; a turning point. 

  • A traumatic or stressful change in a person's life. 

  • A sudden change in the course of a disease, usually at which point the patient is expected to either recover or die. 

  • A point in a drama at which a conflict reaches a peak before being resolved. 

  • An unstable situation, in political, social, economic or military affairs, especially one involving an impending abrupt change. 

rivet

noun
  • Any fixed point or certain basis. 

  • A cylindrical mechanical fastener that attaches multiple parts together by fitting through a hole and deforming the head(s) at either end. 

verb
  • To command the attention of. 

  • To attach or fasten parts by using rivets. 

  • To make firm or immovable. 

  • To install rivets. 

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