synonym Comparative
衰退
VS
腐敗
Differences Between "衰退" and "腐敗"
Option A
衰退
Meaning
decline; decay; waning
Reading
すいたい (suitai)
Syllabus Level
N3
Practical Example
少子高齢化が進むことで、地方の産業が_______することが懸念されています。
With the advancing declining birthrate and aging population, there are concerns that local industries will decline.
Option B
腐敗
Meaning
decay; putrefaction; corruption
Reading
ふはい (fuhai)
Syllabus Level
N2
Practical Example
古い食べ物はすぐに腐敗してしまう。
Old food decays quickly.
Which one to use?
Select the correct Japanese word for this context
Which word fits this context: "(decline; decay; waning)"?
🎉 正解 / Correct!
使い分け解説:
- 衰退: Refers to the decline, waning, or decay of a nation, economy, industry, or power. Can be used with する as a verb (衰退する). Contrast with 繁栄 (prosperity). ⚠️ Haruka's Voice Column: 'Our business rivals are declining, but... our relationship will never decline! It will only grow stronger and warmer forever! Understood?! No backing down!' / 【ハルカ部長のワンポイント指導】『ライバル企業の衰退ね。でもね、あんたと毎日こうして一緒にいる温かい関係性だけは、絶対に衰退（後退）させないんだから！一生かけて熱く進歩させるわ！』
- 腐敗: Can refer to the physical decay of organic matter or the moral/political corruption of an organization or society. It's a noun that can also be used as a する-verb (腐敗する). 有機物の物理的な腐敗だけでなく、組織や社会の倫理的・政治的な腐敗を指すこともあります。
- 衰退: Refers to the decline, waning, or decay of a nation, economy, industry, or power. Can be used with する as a verb (衰退する). Contrast with 繁栄 (prosperity). ⚠️ Haruka's Voice Column: 'Our business rivals are declining, but... our relationship will never decline! It will only grow stronger and warmer forever! Understood?! No backing down!' / 【ハルカ部長のワンポイント指導】『ライバル企業の衰退ね。でもね、あんたと毎日こうして一緒にいる温かい関係性だけは、絶対に衰退（後退）させないんだから！一生かけて熱く進歩させるわ！』
- 腐敗: Can refer to the physical decay of organic matter or the moral/political corruption of an organization or society. It's a noun that can also be used as a する-verb (腐敗する). 有機物の物理的な腐敗だけでなく、組織や社会の倫理的・政治的な腐敗を指すこともあります。
Want to boost your Japanese vocabulary?
Project Eagle automatically tracks and targets your weak words using AI. Practice thousands of operational exams completely for free!