(くう) (n) (1) empty air; sky; (2) {Buddh} shunya (emptiness, the lack of an immutable intrinsic nature within any phemomenon); (3) (abbr) (See 空軍) air force; (n,adj-na) (4) fruitlessness; meaninglessness; (5) (See 五大・1) void (one of the five elements) [EDICT]
(そら) (n) sky; the heavens; (P) [EDICT]
(kōng, ㄎㄨㄥ) air; sky; empty; free time; in vain [CE-DICT]
(kòng, ㄎㄨㄥˋ) emptied; leisure [CE-DICT]
由
(よし) (n) reason; significance; cause; (P) [EDICT]
(yóu, ㄧㄡˊ) to follow; from; it is for...to; reason; cause; because of; due to; to; to leave it (to sb); by (introduces passive verb) [CE-DICT]
于
(Yú, ㄩˊ) surname Yu [CE-DICT]
(yú, ㄩˊ) in; at; to; from; by; than; out of [CE-DICT]
产
(chǎn, ㄔㄢˇ) to give birth; to reproduce; to produce; product; resource; estate; property [CE-DICT]