descant vs speel

descant

verb
  • To discuss at length. 

  • To sing or play a descant. 

noun
  • A lengthy discourse on a subject. 

  • A counterpoint melody sung or played above the theme. 

speel

verb
  • To talk at length, to spiel. 

  • To run. 

  • To climb. 

  • To lake, play, sport, take amusement. 

noun
  • A splinter; a strip of wood or metal. 

  • A game. 

  • A story; a spiel. 

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