一利一害[ichiriichigai] advantages and disadvantages
煙害[engai] smoke pollution
加害[kagai] assault
加害者[kagaisha] assailant
禍害[kagai] evil

害悪[gaiaku] harm
害虫[gaichuu] harmful insect
害鳥[gaichou] vermin
害毒[gaidoku] harm

機関[karakuri] mechanism
アナログ計算機[anarogukeisanki] analog computer
エンジン発動機[enjinhatsudouki] engine
サーボ機構[saabokikou] servomechanism
シフト演算機構[shifutoenzankikou] shift arithmetic unit

ジェット機[jettoki] jet aeroplane
弾機[hatsujou] spring (e.g. coil, leaf)
ヒグス機構[higusukikou] Higgs mechanism (physics)
プロペラ機[puroperaki] propeller-driven aircraft
圧延機[atsuenki] rolling machine

もし可能ならば[moshikanounaraba] if possible
英語基礎能力試験[eigokisonouryokushiken] English Language Proficiency Test
応答能[outounou] competence
黄金万能[ougonbannou] the almighty dollar
価格性能[kakakuseinou] cost effectiveness

可能[kanou] potential
可能であれば[kanoudeareba] if possible
可能性[kanousei] potentiality
可能性が高い[kanouseigatakai] very likely
可能選択[kanousentaku] available choice

エンジン故障[enjinkoshou] engine failure
安全保障[anzenhoshou] security guarantee (e.g. military security, network security, etc.)
安全保障条約[anzenhoshoujouyaku] US-Japan Security Treaty
画障[gashou] pictured paper doors
気に障る[kinisawaru] to hurt one's feelings

気障[kiza] affected
血行障害[kekkoushougai] disturbance (blockage) of blood flow
故障[koshou] break-down
黒内障[kokunaishou] black cataract
差し障り[sashisawari] offence