conception vs mistake

conception

noun
  • An image, idea, or notion formed in the mind; a concept, plan or design. 

  • The act of conceiving. 

  • The power or faculty of apprehending of forming an idea in the mind; the power of recalling a past sensation or perception; the ability to form mental abstractions. 

  • The fertilization of an ovum by a sperm to form a zygote. 

  • The state of being conceived; the beginning. 

  • The start of pregnancy. 

  • The formation of a conceptus or an implanted embryo. 

mistake

verb
  • To understand wrongly, taking one thing or person for another. 

noun
  • An error; a blunder. 

  • A pitch which was intended to be pitched in a hard-to-hit location, but instead ends up in an easy-to-hit place. 

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