Vocabulary consisting only from characters you are able to read
七日
なのか
seven days, the seventh day of the monthjlpt5, toki
水力
すいりょく
hydraulic power, water powermix
山川
さんせん; やまかわ; やまがわ
mountains and rivers; mountains and rivers; mountain riversmix
三日
みっか
three days, the third day of the monthjlpt5, toki