Vocabulary consisting only from characters you are able to read
真空
しんくう
vacuum, hollow, emptymix
世話になる
せわになる
to receive favor (favour), to be much obliged to someone, to be indebtedgodan, verb
気づく
きづく
to notice/to recognize/to recognise/to become aware of/to perceive/to realize/to realisegodan, verb