Quadruple VS
Synonym Boundary: "四", "四原因説", "四諦", "文房四宝"
All represent the core concept "four", but require precise selection.
Japanese Option A
四
よん／し (yon/shi)
N5 / CEFR
Japanese Option B
四原因説
しげんいんせつ (shigen'insetsu)
C2 / CEFR
Japanese Option C
四諦
したい (shitai)
C2 / CEFR
Japanese Option D
文房四宝
ぶんぼうしほう (bunboushihou)
C2 / CEFR
Quadruple VS Nuance Contrast & Social Differences
When expressing "four" in Japanese, you must carefully distinguish between "四", "四原因説", "四諦", "文房四宝" based on context.
- 四 (よん／し (yon/shi) - Level: N5): Maps to "four" and is used when 数を数えるときに使います。「よん」と「し」の二つの読み方があり、状況によって使い分けられます。一般的には「よん」が多く使われますが、４月（しがつ）のように「し」と読む場合もあります。/ Used for counting. It has two readings, 'yon' and 'shi', used depending on the situation. 'Yon' is generally more common, but 'shi' is used in cases like ４月.
- 四原因説 (しげんいんせつ (shigen'insetsu) - Level: C2): Maps to "four causes (Aristotle)" and is used when Essential structural term in CEFR C2 vocabulary syllabus..
- 四諦 (したい (shitai) - Level: C2): Maps to "The Four Noble Truths" and is used when Essential structural term in CEFR C2 vocabulary syllabus..
- 文房四宝 (ぶんぼうしほう (bunboushihou) - Level: C2): Maps to "the four treasures of the study" and is used when Essential structural term in CEFR C2 vocabulary syllabus..
Context for "四"
私は四人家族です。
I have a family of four.
Context for "四原因説"
私は四原因説に興味があります。
I am interested in four causes (Aristotle).
Context for "四諦"
私は四諦に興味があります。
I am interested in The Four Noble Truths.
Context for "文房四宝"
私は文房四宝に興味があります。
I am interested in the four treasures of the study.
Synonym Mastery Challenge
Which Japanese word perfectly fits this blank space?
Fill in the blank: "私は ＿＿＿ 人家族です。" (Meaning: "I have a family of four.")
🎉 Correct Answer!
Remember: "四" is correct here because it represents "four" in the context: "I have a family of four.".