Vocabulary consisting only from characters you are able to read
必要(な)
ひつよう(な)
(1)necessary/needed/essential/indispensable/(n) (2)necessity/need/requirement/(P) adj, leda1
2階
2かい
(1)storey/story/floor/(n) (2)stairs/(n,n-suf) (3)stage (in chronostratigraphy)/(ctr) (4)counter for storeys and floors of a building/(P); stairs; (n) stairs mix