harp vs quern

harp

noun
  • A grain sieve. 

  • Any instrument of the same musicological type. 

  • A harmonica. 

  • A musical instrument consisting of a body and a curved neck, strung with strings of varying length that are stroked or plucked with the fingers and are vertical to the soundboard when viewed from the end of the body 

verb
  • To repeatedly mention a subject. 

  • To play (a tune) on the harp. 

  • To play on (a harp or similar instrument). 

quern

noun
  • A mill for grinding corn, especially a hand-mill made of two circular stones. 

verb
  • To grind; to use a quern. 

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