metre vs tempo

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. 

tempo

noun
  • The number of beats per minute in a piece of music; also, an indicative term denoting approximate rate of speed in written music (examples: allegro, andante) 

  • A small truck or cargo van with three or four wheels, commonly used for commercial transport and deliveries (particularly in Asian and African countries): a genericized trademark, originally associated with the manufacturer Vidal & Sohn Tempo-Werke GmbH. 

  • The timing advantage of being on lead, thus being first to initiate a strategy to develop tricks for one's side. 

  • The steady pace set by the frontmost riders. 

  • A frequency or rate. 

  • The timing of a particular event – earlier or later than in an alternative situation (as in chess example) 

  • A rapid rate of play by the offense resulting from reducing the amount of time which elapses after one play ends and the next starts. 

  • A move which is part of one's own plan or strategy and forces, e.g. by means of a check or attacking a piece, the opponent to make a move which is not bad but of no use for him (the player gains a tempo, the opponent loses a tempo), or equivalently a player achieves the same result in fewer moves by one approach rather than another. 

  • A temporary carport. 

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