metre vs tonality

metre

noun
  • The rhythm or measure in verse and musical composition. 

  • The basic unit of length in the International System of Units (SI: Système International d'Unités), equal to the distance travelled by light in a vacuum in 1/299 792 458 seconds. The metre is equal to 39+⁴⁷⁄₁₂₇ (approximately 39.37) imperial inches. 

verb
  • To put into metrical form. 

tonality

noun
  • The quality of all the tones in a composition heard in relation to the tonic. 

  • The interrelation of the tones in a painting. 

  • The system of seven tones built on a tonic key; the 24 major and minor scales. 

  • A sound of specific pitch and quality; timbre. 

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