Vocabulary consisting only from characters you are able to read
石
koku
(1)measure of volume (approx. 180.39 liters, 6.37 cub. ft.)/ (2)measure of a Japanese-style boat's loading capacity (approx. 278.26 liters)/(P) leda1
集中力
shuuchuuryoku
(powers of) concentration, ability to concentratemix