challenge vs trust

challenge

verb
  • To dare (someone). 

  • To question or demand the countersign from (one who attempts to pass the lines). 

  • To invite (someone) to take part in a competition. 

  • To be difficult or challenging for. 

  • To call something into question or dispute. 

  • To object to the reception of the vote of, e.g. on the ground that the person is not qualified as a voter. 

  • To take (a final exam) in order to get credit for a course without taking it. 

  • To make a formal objection to a juror. 

  • To dispute (something). 

noun
  • The act of appealing a ruling or decision of a court of administrative agency. 

  • An antagonization or instigation intended to convince a person to perform an action they otherwise would not. 

  • A bid to overcome something. 

  • The act of seeking to remove a judge, arbitrator, or other judicial or semi-judicial figure for reasons of alleged bias or incapacity. 

  • An act of seeking to have a certain person be declared not legally qualified to vote, made when the person offers their ballot. 

  • The act of a sentry in halting a person and demanding the countersign, or (by extension) the action of a computer system demanding a password, etc. 

  • A summons to fight a duel; also, the letter or message conveying the summons. 

  • A difficult task, especially one that the person making the attempt finds more enjoyable because of that difficulty. 

  • An attempt to take possession; a tackle. 

  • An attempt to have a work of literature restricted or removed from a public library or school curriculum. 

  • The opening and crying of hounds upon first finding the scent of their game. 

  • A judge's interest in the result of a case, constituting grounds for them to not be allowed to sit the case (e.g., a conflict of interest). 

trust

verb
  • To hope confidently; to believe (usually with a phrase or infinitive clause as the object) 

  • To rely on (something), as though having trust (on it). 

  • To have trust; to be credulous; to be won to confidence; to confide. 

  • To give credence to; to believe; to credit. 

  • To have faith in; to rely on for continuing support or aid. 

  • to show confidence in a person by entrusting them with something. 

  • To commit, as to one's care; to entrust. 

  • To give credit to; to sell to upon credit, or in confidence of future payment. 

  • To place confidence in, to rely on, to confide in. 

noun
  • Confidence in the future payment for goods or services supplied; credit. 

  • That upon which confidence is reposed; ground of reliance; hope. 

  • A group of businessmen or traders organised for mutual benefit to produce and distribute specific commodities or services, and managed by a central body of trustees. 

  • Affirmation of the access rights of a user of a computer system. 

  • Trustworthiness, reliability. 

  • That which is committed or entrusted; something received in confidence; a charge. 

  • The condition or obligation of one to whom anything is confided; responsible charge or office. 

  • Dependence upon something in the future; hope. 

  • The confidence vested in a person who has legal ownership of a property to manage for the benefit of another. 

  • An arrangement whereby property or money is given to be held by a third party (a trustee), on the basis that it will be managed for the benefit of, or eventually transferred to, a stated beneficiary; for example, money to be given to a child when he or she reaches adulthood. 

  • Confidence in or reliance on some person or quality. 

adj
  • of or relating to a trust. 

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