juncture vs point of contact

juncture

noun
  • A place where things join, a junction. 

  • A critical moment in time. 

  • 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. 

point of contact

noun
  • A specific intersection; a contact point. 

  • The single person who represents an organization, for a specific task. 

  • A person who is associated with a defined Internet entity. 

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