Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
iwa rock (boulder)kagaku, leda1, shizen
古い furui old (not person), ancient, staleadj, jlpt5, leda1
手話 šuwa sign languagekaiwa
発電所 hacudenšo power plant, power stationmix
今年 kotoši this yearjlpt5, toki