Meaning and Usage
"下降" (かこう) primarily means a decline, fall, or descent. It is often used in formal or technical contexts such as economics, weather, or statistics to describe a decrease or downward trend.
Common Contexts
You will frequently see "下降" used with words like "気温" (temperature), "株価" (stock prices), and "経済" (economy) to indicate a drop or decline. It can describe physical descent (like temperature or altitude) or abstract declines (like economic performance).
Collocations and Patterns
- 下降する: to decline or fall (used as a verb)
- 下降傾向: a downward trend
- 急下降: sudden drop
- 気温の下降: drop in temperature
Register and Nuance
"下降" is more formal and often appears in written or formal spoken Japanese, such as news reports or business discussions. For casual conversation, simpler words like "下がる" (さがる) might be preferred.
Common Mistakes
Learners sometimes confuse "下降" with "下落" (げらく), which also means decline but is more commonly used for prices or values. "下降" has a broader use including physical descent and abstract decreases. Use "下降" when emphasizing a general downward movement or trend.