sound off vs spiel

sound off

verb
  • Command instructing a person to speak up or acknowledge something. 

  • To hold forth about something in an opinionated manner. 

  • Command instructing a person to confirm that they are present or that some other objective has been met. 

spiel

verb
  • To give a sales pitch; to promote by speaking. 

  • To talk at length. 

noun
  • A game of curling. 

  • A lengthy and extravagant speech or argument usually intended to persuade. 

  • An early form of rap music. 

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