Vocabulary consisting only from characters you are able to read
山
jama
mountain, pile, heap, climax, critical pointjlpt5, shizen
二十日
hacuka
twenty days, twentieth day of the monthjlpt5, toki
水力
suirjoku
hydraulic power, water powermix
八日
jouka
eight days, the eighth (day of the month)jlpt5, toki