A1 noun Neutral

効果

/koːka/

The result or impact produced by an action, treatment, or cause. It is used to describe how well something works or the specific outcome achieved through effort or influence.

Ejemplos

3 de 5
1

この薬はすぐに効果が出ます。

This medicine takes effect quickly.

2

新政策の経済的効果を検討する必要があります。

We need to examine the economic effects of the new policy.

3

この筋トレ、効果あると思う?

Do you think this workout is effective?

Familia de palabras

Sustantivo
効果
Adverbio
効果的に
Adjetivo
効果的
Relacionado
有効性
💡

Truco para recordar

Think of a 'Coca-Cola' (Kouka) commercial; the 'effect' of drinking it is supposed to be instant happiness and refreshment.

Quiz rápido

毎日の練習は、ピアノの上達に大きな___があります。

¡Correcto!

La respuesta correcta es: 効果

Ejemplos

1

この薬はすぐに効果が出ます。

everyday

This medicine takes effect quickly.

2

新政策の経済的効果を検討する必要があります。

formal

We need to examine the economic effects of the new policy.

3

この筋トレ、効果あると思う?

informal

Do you think this workout is effective?

4

実験により、その成分の抗酸化効果が証明された。

academic

The experiment proved the antioxidant effect of the component.

5

先月の広告はあまり効果がありませんでした。

business

Last month's advertisement wasn't very effective.

Familia de palabras

Sustantivo
効果
Adverbio
効果的に
Adjetivo
効果的
Relacionado
有効性

Colocaciones comunes

効果がある to be effective
効果が出る to show results
効果を試す to test the effectiveness
高い効果 high effectiveness
相乗効果 synergy / synergistic effect

Frases Comunes

効果絶大

extremely effective

音響効果

sound effects

心理的効果

psychological effect

Se confunde a menudo con

効果 vs 結果

'Kekka' is a general result (can be good or bad), while 'Kouka' focuses on the effectiveness or intended influence of an action.

効果 vs 効率

'Kouritsu' refers to efficiency (speed/resource usage), whereas 'Kouka' refers to effectiveness (the power to produce a result).

📝

Notas de uso

Kouka is most commonly paired with the verbs 'aru' (to have) or 'deru' (to appear/show). It is used for positive or intended outcomes, except in the phrase 'gyaku-kouka' (backfire).

⚠️

Errores comunes

Learners often forget that 'kouka' is a noun and try to use it as a verb without 'ga aru' or 'wo motarasu'. Do not say 'kouka suru' to mean 'to be effective'.

💡

Truco para recordar

Think of a 'Coca-Cola' (Kouka) commercial; the 'effect' of drinking it is supposed to be instant happiness and refreshment.

📖

Origen de la palabra

Derived from Sinitic roots: 'kou' (効) meaning efficacy or result, and 'ka' (果) meaning fruit or consequence.

Patrones gramaticales

~に効果がある (effective for/on ~) ~の効果で (due to the effect of ~) 効果的な + Noun (effective ~)
🌍

Contexto cultural

In Japanese marketing, especially for cosmetics and supplements, the word 'kouka' is strictly regulated by the Pharmaceutical Affairs Act regarding what claims can be made.

Quiz rápido

毎日の練習は、ピアノの上達に大きな___があります。

¡Correcto!

La respuesta correcta es: 効果

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