completion vs infancy

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. 

infancy

noun
  • An early stage in the development of anything. 

  • The state of being a minor. 

  • The state of being an infant. 

  • The earliest period of childhood (crawling rather than walking). 

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