砂（すな、suna）
- sand

The Japanese word 砂 (すな) primarily means "sand." It refers to fine, loose grains of rock, typically found on beaches, deserts, or riverbeds. It can also describe other similar granular materials.

⚫︎砂浜で遊ぶ Translation: Playing on the beach. ⚫︎砂のお城を作る Translation: Building a sandcastle. ⚫︎風が砂を巻き上げた Translation: The wind whipped up the sand.

砂 is a common noun and can be used in various contexts. ⚫︎It can be used to describe the material itself. ⚫︎It's used when talking about beaches, deserts, construction, or even in metaphorical senses.

⚫︎The standard way to write 砂 is with the kanji 砂, which is the most common. ⚫︎It is also written in hiragana as すな. ⚫︎The okurigana (suffix hiragana) is not applicable because 砂 is a single word. ⚫︎The katakana form is not typically used.

⚫︎There aren't many direct synonyms, as 砂 specifically refers to sand. ⚫︎However, words related to sand might include: ⚫︎砂地(すなち) - Sandy ground ⚫︎砂漠(さばく) - Desert

There is no direct antonym for 砂, as it is a specific material. ⚫︎Words describing opposite environments could be considered as indirect antonyms. ⚫︎岩(いわ) - Rock

子供たちは海岸で砂］遊びを楽しんだ。 ・Translation: The children enjoyed playing in the sand on the beach. ・Explanation: This sentence describes the activity of playing with sand.

この建物は砂とセメントで作られています。 ・Translation: This building is made of sand and cement. ・Explanation: This sentence explains the materials used in construction.

The etymology of 砂 isn't definitively known. It is considered a native Japanese word (yamato kotoba).