Quintuple VS
Synonym Boundary: "一", "一つ", "もういちど", "億", "一因"
All represent the core concept "one", but require precise selection.
Japanese Option A
一
いち (ichi)
N5 / CEFR
Japanese Option B
一つ
ひとつ (hitotsu)
N5 / CEFR
Japanese Option C
もういちど
もういちど (mou ichido)
N5 / CEFR
Japanese Option D
億
おく (oku)
N3 / CEFR
Japanese Option E
一因
いちいん (ichiin)
N2 / CEFR
Quintuple VS Nuance Contrast & Social Differences
When expressing "one" in Japanese, you must carefully distinguish between "一", "一つ", "もういちど", "億", "一因" based on context.
- 一 (いち (ichi) - Level: N5): Maps to "one" and is used when 数を数えるときに使います。ひとつ、一人、一日など、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 'hitotsu'.
- 一つ (ひとつ (hitotsu) - Level: N5): Maps to "one (general counter for objects)" and is used when Used for counting general items, especially small, individual objects, when a specific counter is not needed or known..
- もういちど (もういちど (mou ichido) - Level: N5): Maps to "One more time; Again" and is used when Used to request repetition or another attempt. Often combined with 「お願いします」.
- 億 (おく (oku) - Level: N3): Maps to "one hundred million (100,000,000)" and is used when A large numerical unit in Japanese. 1億 = 100,000,000. Often used for large amounts of money, population, or astronomical figures..
- 一因 (いちいん (ichiin) - Level: N2): Maps to "one cause; a contributing factor" and is used when Used to indicate one of several causes or factors contributing to a situation, often a negative one..
Context for "一"
りんごが一つあります。
There is one apple.
Context for "一つ"
りんごを一つください。
Please give me one apple.
Context for "もういちど"
もう一度言ってください。
Please say it one more time.
Context for "億"
日本の人口は約1億2千万です。
Japan's population is approximately 120 million.
Context for "一因"
彼の失敗は準備不足が一因だ。
His failure was partly due to insufficient preparation.
Synonym Mastery Challenge
Which Japanese word perfectly fits this blank space?
Fill in the blank: "りんごが ＿＿＿ つあります。" (Meaning: "There is one apple.")
🎉 Correct Answer!
Remember: "一" is correct here because it represents "one" in the context: "There is one apple.".