Vocabulary consisting only from characters you are able to read
利く
kiku
(1)to be effective, to show effect, (2)to do its work, to carry out its function well, (3)to be possible to use godan, verb, vintrans
便り
tayori
(1)news, tidings, information, correspondence, letter; (2)news from ... mix
開閉
kaihei
opening and shuttingsuru