rapidness vs scutter

rapidness

noun

  • The characteristic of being rapid. 

scutter

noun

  • A hasty run. 

  • Thin excrement. 

verb

  • To run with a light pattering noise; to skitter. 

  • To void thin excrement. 

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