アナログデジタル変換器[anarogudejitaruhenkanki] analog-digital converter
圧搾器[assakuki] compression
圧力調整器[atsuryokuchouseiki] pressure regulator
安全器[anzenki] safety device
安定器[anteiki] stabilizer

医療器械[iryoukikai] medical appliances
育雛器[ikusuuki] breeder
化学兵器[kagakuheiki] chemical weapons
化学兵器禁止条約[kagakuheikikinshijouyaku] chemical weapons ban treaty
加減抵抗器[kagenteikouki] rheostat

葵祭[aoimatsuri] hollyhock festival
慰霊祭[ireisai] memorial service
学園祭[gakuensai] school festival
学祭[gakusai] school festival
冠婚葬祭[kankonsousai] important ceremonial occasions in family relationships

祇園祭[gionmatsuri] Gion Festival (in Kyoto during the month of July, with high point on the 17th)
供祭[gusai] offerings
血祭り[chimatsuri] bloodbath
元始祭[genshisai] Festival of Origins (January 3)
五十年祭[gojuunensai] jubilee