Synonym Comparison
The Nuance Difference: "開けます" vs "役に立つ"
Master the exact conceptual boundary between these Japanese terms.
Japanese Term A
開けます
あけます (akemasu)
N5 / CEFR Syllabus
VS
Japanese Term B
役に立つ
やくにたつ (yaku ni tatsu)
N4 / CEFR Syllabus
Nuance Contrast & Social Differences
In Japanese, both 開けます and 役に立つ are often translated to English but have distinct usages.
開けます (あけます (akemasu)) represents "to open" (Level: N5) and typically represents Transitive verb. Used for opening doors, windows, books, shops, eyes, etc. The object is marked with を..
On the other hand, 役に立つ (やくにたつ (yaku ni tatsu)) translates to "to be useful, to be helpful" (Level: N4) and is used for A set phrase meaning to be useful or helpful for someone or something. It describes the utility of an object, skill, or person. Often followed by the particle に. Mixing these up can sound unnatural to native Japanese speakers!
Bilingual Sentence for "開けます"
窓を開けます。
I open the window.
Bilingual Sentence for "役に立つ"
この辞書は日本語の勉強に役に立ちます。
This dictionary is useful for studying Japanese.
Nuance Mastery Quiz
Which Japanese word perfectly fits this blank space?
Fill in the blank: "窓を ＿＿＿ 。" (Meaning: "I open the window.")
🎉 Correct Answer!
Remember: "開けます" fits here because it represents "to open" in the context: "I open the window.".