monotone vs singalong

monotone

noun
  • A single unvaried tone of speech or a sound. 

  • A piece of writing in one strain throughout. 

adj
  • Being, or having the salient properties of, a monotone function. 

  • Having a single unvaried pitch. 

verb
  • To speak in a monotone. 

singalong

noun
  • A gathering of people who sing together 

adj
  • designed to allow or encourage the audience to sing along 

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