scamper vs step on it

scamper

verb
  • To run quickly and lightly, especially in a playful or undignified manner. 

noun
  • A quick, light run. 

  • One who skimps or does slipshod work. 

step on it

verb
  • To act quickly. 

  • To drive fast; to step on the accelerator. 

How often have the words scamper and step on it occurred in a corpus of books? (source: Google Ngram Viewer )