conniption vs slow burn

conniption

noun

  • A fit of anger or panic; conniption fit. 

  • A fit of laughing; convulsion. 

slow burn

noun

  • A gradually increasing feeling of anger or frustration. 

  • A romantic story (especially a work of fan fiction) in which the central relationship develops slowly. 

adj

  • Developing slowly over the course of the story. 

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