What's the difference between challenge and expostulate?

Challenge


Definition:

  • (n.) An invitation to engage in a contest or controversy of any kind; a defiance; specifically, a summons to fight a duel; also, the letter or message conveying the summons.
  • (n.) The act of a sentry in halting any one who appears at his post, and demanding the countersign.
  • (n.) A claim or demand.
  • (n.) The opening and crying of hounds at first finding the scent of their game.
  • (n.) An exception to a juror or to a member of a court martial, coupled with a demand that he should be held incompetent to act; the claim of a party that a certain person or persons shall not sit in trial upon him or his cause.
  • (n.) An exception to a person as not legally qualified to vote. The challenge must be made when the ballot is offered.
  • (n.) To call to a contest of any kind; to call to answer; to defy.
  • (n.) To call, invite, or summon to answer for an offense by personal combat.
  • (n.) To claim as due; to demand as a right.
  • (n.) To censure; to blame.
  • (n.) To question or demand the countersign from (one who attempts to pass the lines); as, the sentinel challenged us, with "Who comes there?"
  • (n.) To take exception to; question; as, to challenge the accuracy of a statement or of a quotation.
  • (n.) To object to or take exception to, as to a juror, or member of a court.
  • (n.) To object to the reception of the vote of, as on the ground that the person in not qualified as a voter.
  • (v. i.) To assert a right; to claim a place.

Example Sentences:

  • (1) Bronchial challenge caused an immediate asthmatic response.
  • (2) When chimeric animals were subjected to a lethal challenge of endotoxin, their response was markedly altered by the transferred lymphoid cells.
  • (3) This frees the student to experience the excitement and challenge of learning and the joy of helping people.
  • (4) The degree of increase in Meth responsiveness elicited by the initial provocation is a major factor in determining the airway response to a subsequent HS challenge.
  • (5) Intranasal challenge of allergic subjects with the allergen to which they are sensitive rapidly produces sneezing, rhinorrhea, and airway obstruction.
  • (6) Matthias Müller, VW’s chief executive, said: “In light of the wide range of challenges we are currently facing, we are satisfied overall with the start we have made to what will undoubtedly be a demanding fiscal year 2016.
  • (7) In 1935, Einstein challenged the prevailing interpretation of quantum theory.
  • (8) A shrinking populace is perhaps a greater challenge than any problems with Russia.
  • (9) Intraperitoneal injection of indomethacin to pretreated animals resulted in increased levels of IL-1 and TNF and decreased levels of PGE2 following challenge with E. coli.
  • (10) Think of Nelson Mandela – there is a determination, an unwillingness to bend in the face of challenges, that earns you respect and makes people look to you for guidance.
  • (11) The children's pulse, pulse rate variability, and blood pressure were then measured at rest and during a challenging situation.
  • (12) At first it looked as though the winger might have shown too much of the ball to the defence, yet he managed to gain a crucial last touch to nudge it past Phil Jones and into the path of Jerome, who slipped Chris Smalling’s attempt at a covering tackle and held off Michael Carrick’s challenge to place a shot past an exposed De Gea.
  • (13) The results support the notion that mediator lymphocytes circulate in tumor immunized rats in a noncytotoxic state, specifically recognize tumor cells at a challenge site, and mediate induction of effector cells locally.
  • (14) The role of blood acetylcholinesterase in moderating the effects of organophosphate challenge in rats was tested.
  • (15) In the first trial to investigate the effect of tick control, significant improvements in liveweight gain (LWG) occurred only in periods of medium to high challenge with adult Amblyomma variegatum.
  • (16) The SNT and the I-ELISA indicated that the pigs responded to vaccination and challenge.
  • (17) When caffeine evokes a contraction, and only then, crayfish muscle fibers become refractory to a second challenge with caffeine for up to 20 min in the standard saline (5 mM K(o)).
  • (18) This observation seriously challenges the hypothesis that SCE cancellation results as a consequence of persistence of the lesions induced by these agents.
  • (19) Injection of about four ImD 50 of vaccine intracerebrally produced a local immunity, resulting in an immediate kill of challenge organisms given 14 days later.
  • (20) There was no correlation between anti-TNP-precipitating antibody titer after sensitization and the ability to respond to challenge by hapten-heterologous carrier.

Expostulate


Definition:

  • (v. i.) To reason earnestly with a person on some impropriety of his conduct, representing the wrong he has done or intends, and urging him to make redress or to desist; to remonstrate; -- followed by with.
  • (v. t.) To discuss; to examine.

Example Sentences:

  • (1) This behavior and other facts regarding double Soret spectra can be explained by a simple expostulation involving lipophilic and corrdinate binding of pi-acceptor ligands.
  • (2) Updated at 5.49pm GMT 3.26pm GMT During the session, The Times's correspondent Juliet Samuel tweeted a couple of highlights that I didn't manage to get into the blog: Juliet Samuel (@CitySamuel) V surprising Goldman admit they don't even look up what institutions actually pay vs what they claim they'd pay in negotiations #royalmail November 20, 2013 Juliet Samuel (@CitySamuel) Nadhim Zahawi love-in with bankers as he expostulates that #royalmail price will take "a long time to settle".
  • (3) Sad: what makes Donald Trump happy A close cousin to “Bad!” (qv) , “Sad!” is probably the favourite among admirers of the president’s climactic expostulations, because it encapsulates perfectly his weirdly emotional, bullying style.
  • (4) (1969), a dully temporising Hollywood account of the life of Che Guevara, in which at one point Sharif’s Guevara is confronted by Jack Palance ’s Fidel Castro with the mumbled expostulation: “Che, sometimes I just don’t understand you.” The Last Valley (1971) and The Horsemen (1971) were poorly rated would-be spectacles.