Vocabulary consisting only from characters you are able to read
暗記
あんき
memorization, memorisation, learning by heartsuru
有無
うむ
(1)existence or nonexistence, presence or absence, (2)consent or refusal, yes or no, (3)(comp) flag indicator, presence or absence marker; (n) (4)existence or nonexistence, presence or absence, (2 mix
呼び鈴
よびりん
bell (used for summoning or signalling), buzzermix