Vocabulary consisting only from characters you are able to read
山
jama
mountain, pile, heap, climax, critical pointjlpt5, shizen
二人
futari
two persons, two people, pair, couplejlpt5
十日
tooka
ten days, the tenth day of the monthjlpt5, toki
一口
hitokuči
(1)mouthful, bite, sip, draft, draught, (2)one word mix
水力
suirjoku
hydraulic power, water powermix