proposition vs speculation

proposition

noun
  • The act of offering (an idea) for consideration. 

  • An assertion so formulated that it can be considered true or false. 

  • A statement of religious doctrine; an article of faith; creed. 

  • In some states, a proposed statute or constitutional amendment to be voted on by the electorate. 

  • The terms of a transaction offered. 

  • An assertion which is provably true, but not important enough to be called a theorem. 

  • An idea or a plan offered. 

  • A complete sentence. 

  • The part of a poem in which the author states the subject or matter of it. 

  • The content of an assertion that may be taken as being true or false and is considered abstractly without reference to the linguistic sentence that constitutes the assertion; (Aristotelian logic) a predicate of a subject that is denied or affirmed and connected by a copula. 

verb
  • To make an offer or suggestion to (someone). 

  • To make a suggestion of sexual intercourse to (someone with whom one is not sexually involved). 

speculation

noun
  • The act or process of reasoning a priori from premises given or assumed. 

  • An investment involving higher-than-normal risk in order to obtain a higher-than-normal return. 

  • A conclusion to which the mind comes by speculating; mere theory; notion; conjecture. 

  • The act or practice of buying land, goods, shares, etc., in expectation of selling at a higher price, or of selling with the expectation of repurchasing at a lower price; a trading on anticipated fluctuations in price, as distinguished from trading in which the profit expected is the difference between the retail and wholesale prices, or the difference of price in different markets. 

  • A card game in which the players buy from one another trumps or whole hands, upon a chance of getting the highest trump dealt, which entitles the holder to the pool of stakes. 

  • The process of thinking or meditating on a subject. 

  • The process of anticipating which branch of code will be chosen and executing it in advance. 

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