Quadruple VS
Synonym Boundary: "に", "二", "表裏一体", "一石二鳥"
All represent the core concept "two", but require precise selection.
Japanese Option A
に
に (ni)
N5 / CEFR
Japanese Option B
二
に (ni)
N5 / CEFR
Japanese Option C
表裏一体
ひょうりいったい (hyōri-ittai)
N1 / CEFR
Japanese Option D
一石二鳥
いっせきにちょう (issekinichou)
B2 / CEFR
Quadruple VS Nuance Contrast & Social Differences
When expressing "two" in Japanese, you must carefully distinguish between "に", "二", "表裏一体", "一石二鳥" based on context.
- に (に (ni) - Level: N5): Maps to "two" and is used when Basic number for counting. Can be used as a standalone number or with various counters.
- 二 (に (ni) - Level: N5): Maps to "two" and is used when 数を数えるときに使います。ふたつ、二人、二日など、他の言葉と組み合わせて使われることも多いです。/ Used for counting. Often combined with other words like 'futatsu'.
- 表裏一体 (ひょうりいったい (hyōri-ittai) - Level: N1): Maps to "two sides of the same coin, inseparable, inseparably linked" and is used when 一見すると対立しているように見える二つの事柄が、実は密接に繋がっており、切り離せない関係にあること、または本質的に同じものであることを表す四字熟語です。.
- 一石二鳥 (いっせきにちょう (issekinichou) - Level: B2): Maps to "two birds, one stone" and is used when Essential structural term in CEFR B2 vocabulary syllabus..
Context for "に"
猫が二匹います。
There are two cats.
Context for "二"
猫が二匹います。
There are two cats.
Context for "表裏一体"
成功と失敗は表裏一体の関係にある。
Success and failure are two sides of the same coin.
Context for "一石二鳥"
私は一石二鳥に興味があります。
I am interested in two birds, one stone.
Synonym Mastery Challenge
Which Japanese word perfectly fits this blank space?
Fill in the blank: "猫が二匹います。" (Meaning: "There are two cats.")
🎉 Correct Answer!
Remember: "に" is correct here because it represents "two" in the context: "There are two cats.".