jiffy vs juncture

jiffy

noun
  • A very short, unspecified length of time. 

  • The time taken for light to travel a specified distance in a vacuum, usually one centimetre, but sometimes one foot or the width of a nucleon. 

  • A unit of time defined by the frequency of its basic timer – historically, and by convention, 0.01 of a second, but some computer operating systems use other values. 

  • The length of an alternating current power cycle (1/60 or 1/50 of a second). 

juncture

noun
  • A critical moment in time. 

  • A place where things join, a junction. 

  • The manner of moving (transition) or mode of relationship between two consecutive sounds; a suprasegmental phonemic cue, by which a listener can distinguish between two otherwise identical sequences of sounds that have different meanings. 

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