Vocabulary consisting only from characters you are able to read
白黒
shirokuro
(1)black and white, monochrome, (exp,vs) (2)good and evil, right and wrong, guilt and innocence iro
七日
nanoka
seven days, the seventh day of the monthjlpt5, toki
八日
youka
eight days, the eighth (day of the month)jlpt5, toki
私
watakushi
I (formal), myself, private affairsjlpt5
土日
donichi
weekend, Saturday and Sundaymix
水力
suiryoku
hydraulic power, water powermix