fix vs should

fix

verb
  • To focus or determine (oneself, on a concept); to fixate. 

  • To make (a contest, vote, or gamble) unfair; to privilege one contestant or a particular group of contestants, usually before the contest begins; to arrange immunity for defendants by tampering with the justice system via bribery or extortion. 

  • To attach; to affix; to hold in place or at a particular time. 

  • To surgically render an animal, especially a pet, infertile. 

  • To render (a photographic impression) permanent by treating with such applications as will make it insensitive to the action of light. 

  • To become fixed; to settle or remain permanently; to cease from wandering; to rest. 

  • To take revenge on, to best; to serve justice on an assumed miscreant. 

  • To convert into a stable or available form. 

  • To become firm, so as to resist volatilization; to cease to flow or be fluid; to congeal; to become hard and malleable, as a metallic substance. 

  • To prevent enemy pawns from advancing by directly opposing the most advanced one with one of one's own pawns so as to threaten to capture any advancing backward pawns. 

  • To mend, to repair. 

  • To prepare (food or drink). 

  • To map a (point or subset) to itself. 

noun
  • fettlings (mixture used to line a furnace) 

  • A prearrangement of the outcome of a supposedly competitive process, such as a sporting event, a game, an election, a trial, or a bid. 

  • A repair or corrective action. 

  • A determination of location. 

  • A difficult situation; a quandary or dilemma; a predicament. 

  • A single dose of an addictive drug administered to a drug user. 

should

verb
  • Used to give advice or opinion that an action is, or would have been, beneficial or desirable. 

  • Will be likely to (become or do something); indicates a degree of possibility or probability that the stated thing will happen or be true in the future. 

  • Indicates that something is expected to have happened or to be the case now. 

  • Used to express a conditional outcome. 

  • With verbs such as 'see' or 'hear', usually in the second person, used to point out something remarkable in either a good or bad way. 

  • To make a statement of what ought to be true, as opposed to reality. 

  • Used to impart a tentative, conjectural or polite nuance. 

  • Used to express what the speaker would do in another person's situation, as a means of giving a suggestion or recommendation. 

  • Simple past tense of shall. 

  • In questions, asks what is correct, proper, desirable, etc. 

  • Used to issue an instruction (traditionally seen as carrying less force of authority than alternatives such as 'shall' or 'must'). 

  • Used to form a variant of the present subjunctive, expressing a state or action that is hypothetical, potential, mandated, etc. 

noun
  • Something that ought to be the case as opposed to already being the case. 

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