completion vs emergence

completion

noun
  • The act or state of being or making something complete; conclusion, accomplishment. 

  • The space resulting from such an act. 

  • The conclusion of an act of conveyancing concerning the sale of a property. 

  • The act of making a metric space complete by adding points. 

  • A forward pass that is successfully caught by the intended receiver. 

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 completion and emergence occurred in a corpus of books? (source: Google Ngram Viewer )