有効

Adjective

 * 1) effective
 * 2) valid
 * 3) available

Usage notes

 * May be translated into idiomatic English as "on" or "enabled" in some contexts:

Noun

 * 1) effectiveness
 * 2) validity
 * 3) availability
 * 4)  yuko, the points awarded for a type of move in a judo match or the judge's call of yuko