Synonym Comparison
The Nuance Difference: "買います" vs "役に立つ"
Master the exact conceptual boundary between these Japanese terms.
Japanese Term A
買います
かいます (kaimasu)
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 買います and 役に立つ are often translated to English but have distinct usages.
買います (かいます (kaimasu)) represents "to buy" (Level: N5) and typically represents Polite form of 買う.
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 "買います"
新しい服をデパートで買います。
I will buy new clothes at the department store.
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: "新しい服をデパートで ＿＿＿ 。" (Meaning: "I will buy new clothes at the department store.")
🎉 Correct Answer!
Remember: "買います" fits here because it represents "to buy" in the context: "I will buy new clothes at the department store.".