ictus vs metre

ictus

noun
  • In conducting, the indication of a musical event, most often the beat of the tempo or the entry of a section of the orchestra. 

  • The pulse. 

  • A sudden attack, blow, stroke, or seizure, as in a sunstroke, the sting of an insect, pulsation of an artery, etc. 

  • The stress of voice laid upon an accented syllable of a word. Compare arsis. 

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. 

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