704. Difficulty -- N. difficulty; hardness &c adj.; impracticability &c (impossibility) 471; tough work, hard work, uphill work; hard task, Herculean task, Augean task ; task of Sisyphus, Sisyphean labor, tough job, teaser, rasper , dead lift.
705. Facility -- N. facility, ease; easiness &c adj.; capability; feasibility &c (practicability) 470; flexibility, pliancy &c 324; smoothness &c 255.
706. Hindrance -- N. prevention, preclusion, obstruction, stoppage; embolus, embolism [Med.] ; infarct [Med.] ; interruption, interception, interclusion ; hindrance, impedition ; retardment , retardation; embarrassment, oppilation ; coarctation , stricture, restriction; restraint &c 751; inhibition &c 761; blockade &c (closure) 261.
707. Aid -- N. aid, aidance ; assistance, help, opitulation , succor; support, lift, advance, furtherance, promotion; coadjuvancy &c (cooperation) 709 [Obs.].
708. Opposition -- N. opposition, antagonism; oppugnancy , oppugnation ; impugnation ; contrariety; contravention; counteraction &c 179; counterplot.
709. Cooperation -- N. cooperation; coadjuvancy , coadjutancy ; coagency , coefficiency ; concert, concurrence, complicity, participation; union &c 43; additivity, combination &c 48; collusion.
710. Opponent -- N. opponent, antagonist, adversary; adverse party, opposition; enemy &c 891; the other side; assailant.
711. Auxiliary -- N. auxiliary; recruit; assistant; adjuvant, adjutant; ayudante , coaid ; adjunct; help, helper, help mate, helping hand; midwife; colleague, partner, mate, confrere, cooperator; coadjutor, coadjutrix ; collaborator.
712. Party -- N. party, faction, side, denomination, communion, set, crew, band.
713. Discord -- N. disagreement &c 24; discord, disaccord , dissidence, dissonance; jar, clash, shock; jarring, jostling &c v.; screw loose.
714. Concord -- N. concord, accord, harmony, symphony; homologue; agreement &c 23; sympathy, empathy &c (love) 897; response; union, unison, unity; bonds of harmony; peace &c 721; unanimity &c (assent) 488; league &c 712; happy family.
715. Defiance -- N. defiance; daring &c v.; dare; challenge, cartel ; threat &c 909; war cry, war whoop.
716. Attack -- N. attack; assault, assault and battery; onset, onslaught, charge.
717. Defense -- N. defense, protection, guard, ward; shielding &c v.; propugnation , preservation &c 670; guardianship.
718. Retaliation -- N. retaliation, reprisal, retort, payback; counter-stroke, counter-blast, counterplot, counter-project; retribution, lex talionis [Lat.] ; reciprocation &c (reciprocity) 12.
719. Resistance -- N. resistance, stand, front, oppugnation ; oppugnancy ; opposition &c 708; renitence , renitency; reluctation , recalcitration ; kicking &c v.. repulse, rebuff.
720. Contention -- N. contention, strife; contest, contestation ; struggle; belligerency; opposition &c 708.
721. Peace -- N. peace; amity &c (friendship) 888; harmony &c (concord) 714; tranquility, calm &c (quiescence) 265; truce, peace treaty, accord &c (pacification) 723; peace pipe, pipe of peace, calumet of peace.
722. Warfare -- N. warfare; fighting &c v.; hostilities; war, arms, the sword; Mars, Bellona, grim visaged war, horrida bella [Lat.] ; bloodshed.
723. Pacification -- N. pacification, conciliation; reconciliation, reconcilement; shaking of hands, accommodation, arrangement, adjustment; terms, compromise; amnesty, deed of release.
724. Mediation -- N. mediation, mediatorship , mediatization ; intervention, interposition, interference, intermeddling, intercession; arbitration; flag of truce &c 723; good offices, peace offering; parley, negotiation; diplomatics , diplomacy; compromise &c 774.
726. Combatant -- N. combatant; disputant, controversialist, polemic, litigant, belligerent; competitor, rival, corrival ; fighter, assailant; champion, Paladin; mosstrooper , swashbuckler fire eater, duelist, bully, bludgeon man, rough.
727. Arms -- N. arm, arms; weapon, deadly weapon; armament, armaments, armature; panoply, stand of arms; armor &c (defense) 717; armory &c (store) 636; apparatus belli [Lat.] .
728. Arena -- N. arena, field, platform; scene of action, theater; walk, course; hustings; stare, boards &c (playhouse) 599; amphitheater; Coliseum, Colosseum; Flavian amphitheater, hippodrome, circus, race course, corso [Sp.] , turf, cockpit, bear garden, playground, gymnasium, palestra, ring, lists; tiltyard , tilting ground; Campus Martins, Champ de Allars ; campus [U.S.] .