flit vs forward roll

flit

noun
  • A fluttering or darting movement. 

  • A particular, unexpected, short lived change of state. 

verb
  • To move quickly from one location to another. 

  • To move about rapidly and nimbly. 

  • To move house (sometimes a sudden move to avoid debts). 

  • To be unstable; to be easily or often moved. 

  • To move a tethered animal to a new, grazing location. 

  • To unpredictably change state for short periods of time. 

forward roll

noun
  • A movement in which one's body is rolled forward, by putting the head on the ground and swinging the legs over the head. 

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