conjecture vs infer

conjecture

verb
  • To guess; to venture an unproven idea. 

  • To infer on slight evidence; to guess at. 

noun
  • A statement or an idea which is unproven, but is thought to be true; a guess. 

  • A statement likely to be true based on available evidence, but which has not been formally proven. 

  • A supposition based upon incomplete evidence; a hypothesis. 

infer

verb
  • To introduce (something) as a reasoned conclusion; to conclude by reasoning or deduction, as from premises or evidence. 

  • To lead to (something) as a consequence; to imply. 

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