rhythm vs tempo

rhythm

noun
  • The tempo or speed of a beat, song or repetitive event. 

  • A specifically defined pattern of such variation. 

  • A regular quantitative change in a variable (notably natural) process. 

  • Controlled repetition of a phrase, incident or other element as a stylistic figure in literature and other narrative arts; the effect it creates. 

  • The variation of strong and weak elements (such as duration, accent) of sounds, notably in speech or music, over time; a beat or meter. 

  • A flow, repetition or regularity. 

  • The musical instruments which provide rhythm (mainly; not or less melody) in a musical ensemble. 

  • A person's natural feeling for rhythm. 

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 rhythm and tempo occurred in a corpus of books? (source: Google Ngram Viewer )