engendering vs formulation

engendering

noun
  • The act by which something is engendered. 

formulation

noun
  • The act, process, or result of formulating or reducing to a formula. 

  • A medicinal preparation. 

  • A particular linguistic construction; a turn of phrase. 

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