latency vs time lag

latency

noun
  • A delay, an interval between the initiation of something and the occurrence. 

  • The delay between a stimulus and the response it triggers in an organism. 

  • Concealment; the state of being latent; the state of being hidden. 

  • A stage in Sigmund Freud's psychoanalytic theory of the psychosexual development of children where children become asexual until their sexual desires come back at puberty. 

  • Dormancy; the state of being inactive. 

time lag

noun
  • A period of time between one event and another; a delay. 

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