Noun which may take the genitive case particle 'no', Na-adjective (keiyodoshi), Nouninvalid; void; ineffective; unavailable

Na-adjective (keiyodoshi)effective; successful

Na-adjective (keiyodoshi)efficient

Noun, Noun which may take the genitive case particle 'no'effect; effectiveness; efficacy; result · effects (e.g. sound effects, visual effects, special effects)

Godan verb with 'ku' ending, Intransitive verbto be effective; to take effect; to be good (for) · to work; to function well · to be possible (to do, use, etc.); to be able to