Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
空間 くうかん spaceleda1, math
みみ earhito, jlpt3, jlpt5
みず waterjlpt5, kagaku, ryouri, shizen
少しずつ すこしずつ little by littlemix
入口 いりぐち entrance, gate, approach, mouthjlpt5