役立つ vs 有益
Japanese word comparison
Listen to 役立つ
Listen to 有益
| 役立つ | 有益 |
|---|---|
YAku-da-tsu verb | ゆうえき verb |
| to be useful; to be helpful | beneficial; profitable; useful in a beneficial way |
How they differ
有益 emphasizes a positive benefit or gain, often with a sense of lasting value. 役立つ is broader and simply means something is helpful or useful without strongly stressing the size or depth of the benefit.
When to use each
When to use 役立つ: Use 役立つ when you want a plain, general word for something being helpful.
When to use 有益: Use 有益 when you want to stress that something brings clear benefit or advantage.
Side-by-side examples
- このアドバイスは仕事に役立つ。
(This advice is helpful for work.) - このアドバイスは仕事に有益だ。
(This advice is beneficial for work.)
Register & nuance: 有益 is more formal than 役立つ and is often used in writing, presentations, and business or academic contexts.