ベトナム戦争[betonamusensou] Vietnam war
価格競争[kakakukyousou] price competition
価格戦争[kakakusensou] price war
階級闘争[kaikyuutousou] class struggle
核戦争[kakusensou] nuclear warfare

競争[kyousou] competition
競争関係[kyousoukankei] competitive relationship
競争市場[kyousoushijou] competitive market
競争売買[kyousoubaibai] auction
競争力[kyousouryoku] competitive power

お使[otsukai] errand
み使い[mitsukai] angel
悪天使[akutenshi] evil angels
かな使い[kanazukai] kana orthography
雁の使い[karinotsukai] (a) letter

旧仮名使い[kyuukanazukai] former (i.e. before the post-WWII reforms) kana usage in writing the readings of kanji
金を使う[kanewotsukau] to spend money
駆使[kushi] free use
軍使[gunshi] truce bearer
権利行使[kenrikoushi] exercise of a right

ご苦労様[gokurousama] thank you very much for your ...
御苦労さん[gokurousan] I appreciate your efforts
慰労[irou] recognition of services
過労[karou] overwork
過労死[karoushi] death from overwork and mental stress

気苦労[kigurou] worry
漁労[gyorou] fishing
共労者[kyourousha] coworker
勤労[kinrou] labor
勤労階級[kinroukaikyuu] salaried class

紛い[magai] imitation
言紛らす[iimagirasu] to equivocate
諸説紛紛[shosetsufunpun] divergent opinions abound
人工受紛[jinkoujufun] artificial fertilization (of plants)
地域紛争[chiikifunsou] regional conflict

半ば紛れで[nakabamagurede] half due to luck
紛骨砕身[funkotsusaishin] making one's best exertions
紛らす[magirasu] to divert
紛らわしい[magirawashii] confusing
紛らわす[magirawasu] to divert