challenge vs skip

challenge

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

  • 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. 

  • 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). 

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

  • To dare (someone). 

  • 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). 

skip

noun
  • The act of passing over an interval from one thing to another; an omission of a part. 

  • A large open-topped container for waste, designed to be lifted onto the back of a truck to remove it along with its contents. (see also skep). 

  • A college servant. 

  • A skip car. 

  • The player who calls the shots and traditionally throws the last two rocks. 

  • An Australian of Anglo-Celtic descent. 

  • A leaping, jumping or skipping movement. 

  • The scoutmaster of a troop of scouts (youth organization) and their form of address to him. 

  • A wheeled basket used in cotton factories. 

  • A skep, or basket, such as a creel or a handbasket. 

  • A person who attempts to disappear so as not to be found. 

  • A charge of syrup in the pans. 

  • A passage from one sound to another by more than a degree at once. 

  • skywave propagation 

  • The captain of a sports team. Also, a form of address by the team to the captain. 

  • The captain of a bowls team, who directs the team's tactics and rolls the side's last wood, so as to be able to retrieve a difficult situation if necessary. 

  • A beehive. 

  • A transportation container in a mine, usually for ore or mullock. 

verb
  • To move by hopping on alternate feet. 

  • To cause the stylus to jump back to the previous loop of the record's groove, continously repeating that part of the sound, as a result of excessive scratching or wear. 

  • To skim, ricochet or bounce over a surface. 

  • To pass by a stitch as if it were not there, continuing with the next stitch. 

  • To place an item in a skip (etymology 2, sense 1). 

  • To throw (something), making it skim, ricochet, or bounce over a surface. 

  • To disregard, miss or omit part of a continuation (some item or stage). 

  • To have insufficient ink transfer. 

  • To leap about lightly. 

  • Not to attend (some event, especially a class or a meeting). 

  • To jump rope. 

  • To leave, especially in a sudden and covert manner. 

  • To leap lightly over. 

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