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synonym Comparative
効果的
VS
有効な

Differences Between "効果的" and "有効な"

Option A
効果的
Meaning
effective, efficient
Reading
こうかてき (kōkateki)
Syllabus Level
N3
Practical Example
新しい学習法は非常に効果的で、成績が上がった。
The new study method is very effective, and my grades improved.
Option B
有効な
Meaning
valid; effective; current
Reading
ゆうこうな (yuukouna)
Syllabus Level
N3
Practical Example
このチケットは明日まで有効です。
This ticket is valid until tomorrow.

Which one to use?

Select the correct Japanese word for this context

Which word fits this context: "(effective, efficient)"?
🎉 正解 / Correct!
使い分け解説:
- 効果的: Describes something that produces a desired result or a strong positive effect. It is a な-adjective (効果的な方法) and can be used adverbially (効果的に使う).
- 有効な: Used to describe something that is valid, effective, or still current, such as a ticket, license, or method. It is a な-adjective.
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