implication vs symptom

implication

noun
  • A possible effect or result of a decision or action. 

  • The act of implicating. 

  • The state of being implicated. 

  • An implying, or that which is implied, but not expressed; an inference, or something which may fairly be understood, though not expressed in words. 

  • The connective in propositional calculus that, when joining two predicates A and B in that order, has the meaning "if A is true, then B is true". 

  • Logical consequence. 

symptom

noun
  • A signal; anything that indicates, or is characteristic of, the presence of something else, especially of something undesirable. 

  • A perceived change in some function, sensation or appearance of a person that indicates a disease or disorder, such as fever, headache or rash; strictly, a symptom is felt or experienced by the patient, while a sign can be detected by an observer. 

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