Vocabulary consisting only from characters you are able to read
角形
かくけい
(1)(N)-cornered polygon, incl. triangle, (2)Japanese rectangular envelope (opening on the short dimension; numbered 0-8, A3, A4, each with different sizes); mix
倍
ばい
(1)twice, double, (suf) (2)times, -fold jlpt3
階級
かいきゅう
class, rank, grademix
取組
とりくみ
(1)bout (in sports, etc.)/match/ (2)effort/initiative/dealing with/grappling with/wrestling with leda1
協調
きょうちょう
(1)cooperation, conciliation, harmony, (2)firm (market) tone suru
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