雲（くも、kumo）
- cloud

The Japanese word 雲 (くも) refers to "cloud" or "clouds" in the sky. It describes the visible mass of condensed water vapor floating in the atmosphere. This can be in various forms, shapes, and sizes. It's an essential part of the weather and plays a crucial role in the water cycle. The word can be used both in singular and plural contexts. It depends on how you want to describe it.

⚫︎空に雲がある。 ・Translation: There is a cloud in the sky. ⚫︎たくさんの雲が流れている。 ・Translation: Many clouds are flowing. ⚫︎今日の天気は雲りです。 ・Translation: Today's weather is cloudy.

You can use 雲 in various contexts when talking about the weather, sky, or anything related to clouds. It can be used to describe the type of weather or to specifically identify clouds. It is a common word, so it's usable in both formal and informal conversation.

雲 is typically written using: ⚫︎ Kanji: 雲 ⚫︎ Hiragana: くも There are no other common ways to write this word, and the okurigana is fixed.

While there isn't a direct synonym for the general term "cloud," you can use more specific words depending on the type of cloud: ⚫︎ 入道雲 (にゅうどうぐも) - Cumulonimbus cloud ⚫︎ 巻雲 (まきぐも) - Cirrus cloud ⚫︎ 積雲 (せきぐも) - Cumulus cloud

The opposite of 雲 (cloudy) weather would be: ⚫︎ 晴れ (はれ) - clear/sunny

今日は雲が多いけど、雨は降らないでしょう。 ・Translation: There are many clouds today, but it probably won't rain. ・Explanation: This sentence describes the current weather conditions.

飛行機から見た雲は、まるで綿菓子みたいだった。 ・Translation: The clouds seen from the airplane looked like cotton candy. ・Explanation: This sentence describes an observation from an airplane, focusing on the appearance of the clouds.

The etymology of 雲 is not completely clear, but it is believed that the word has been used for a long time. It is a native Japanese word, and it is likely linked to the observation of these formations in the sky. The character itself is a pictograph of a cloud.