egress vs emergence

egress

noun
  • The process of exiting or leaving. 

  • The end of the transit of a celestial body through the disk of an apparently larger one. 

  • An exit or way out. 

verb
  • To exit or leave; to go or come out. 

emergence

noun
  • The act of rising out of a fluid, or coming forth from envelopment or concealment, or of rising into view; sudden uprising or appearance. 

  • In particular: the arising of emergent structure in complex systems. 

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