challenge vs face

challenge

verb
  • To be difficult or challenging for. 

  • 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 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). 

face

verb
  • To be presented or confronted with; to have in prospect. 

  • To make the surface of (anything) flat or smooth; to dress the face of (a stone, a casting, etc.); especially, in turning, to shape or smooth the flat (transverse) surface of, as distinguished from the cylindrical (axial) surface. 

  • To have the front in a certain direction. 

  • To arrange the products in (a store) so that they are tidy and attractive. 

  • To deal with (a difficult situation or person); to accept (facts, reality, etc.) even when undesirable. 

  • To cause (something) to turn or present a face or front, as in a particular direction. 

  • To have as an opponent. 

  • To position oneself or itself so as to have one's face closest to (something). 

  • To have its front closest to, or in the direction of (something else). 

  • To be the batsman on strike. 

  • To line near the edge, especially with a different material. 

  • To cover in front, for ornament, protection, etc.; to put a facing upon. 

  • To cover with better, or better appearing, material than the mass consists of, for purpose of deception, as the surface of a box of tea, a barrel of sugar, etc. 

noun
  • A person; the self; (reflexively, objectifying) oneself. 

  • The front part of the head of a human or other animal, featuring the eyes, nose, and mouth, and the surrounding area. 

  • A headlining wrestler with a persona embodying heroic or virtuous traits and who is regarded as a "good guy", especially one who is handsome and well-conditioned; a baby face. 

  • The width of a pulley, or the length of a cog from end to end. 

  • The mouth. 

  • The side of the card that shows its value (as opposed to the back side, which looks the same on all cards of the deck). 

  • One's facial expression. 

  • A distorted facial expression; an expression of displeasure, insult, etc. 

  • A familiar or well-known person; a member of a particular scene, such as the music or fashion scene. 

  • The front surface of a bat. 

  • The amount expressed on a bill, note, bond, etc., without any interest or discount; face value. 

  • Shameless confidence; boldness; effrontery. 

  • Any surface, especially a front or outer one. 

  • The frontal aspect of something. 

  • The numbered dial of a clock or watch; the clock face. 

  • The part of a golf club that hits the ball. 

  • Public image; outward appearance. 

  • Presence; sight; front. 

  • An aspect of the character or nature of someone or something. 

  • Any of the flat bounding surfaces of a polyhedron; more generally, any of the bounding pieces of a polytope of any dimension. 

  • The directed force of something. 

  • Makeup; one's complete facial cosmetic application. 

  • The head of a lion, shown face-on and cut off immediately behind the ears. 

  • A typeface. 

  • A mode of regard, whether favourable or unfavourable; favour or anger. 

  • Good reputation; standing, in the eyes of others; dignity; prestige. (See lose face, save face). 

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