Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
土木 どぼく public worksmix
水力 すいりょく hydraulic power, water powermix
やま mountain, pile, heap, climax, critical pointjlpt5, shizen
男女 だんじょ man and woman, men and womenmix
手にする てにする (1)to hold (in one's hand), to take (into one's hand), (2)to own, to obtain suru