重量（じゅうりょう、juuryoう）
- weight

The Japanese word 重量 (じゅうりょう) refers to "weight" or "heaviness." It's a noun that signifies the amount of gravitational force acting upon an object. 重量 is typically used to describe the heaviness of something, often measured in units like kilograms (kg) or grams (g). It can also relate to the significance or importance of something, although that usage is less common than the physical sense.

⚫︎その荷物の重量は５キロです。 Translation: The weight of that luggage is 5 kilograms. ⚫︎トラックの最大重量は制限されています。 Translation: The maximum weight of the truck is restricted. ⚫︎彼の発言の重量は大きい。 Translation: His words carry a lot of weight (are very important).

You use 重量 when discussing the weight of physical objects or, less frequently, the importance or significance of something. It is a common word, used in various contexts, from daily conversations to scientific discussions. When discussing weight, it is often paired with units of measurement, like kilograms, grams, pounds, or ounces.

重量 is primarily written using kanji and has the reading じゅうりょう in hiragana. There is only one standard way to write this word. The kanji 重 means "heavy" or "weight," and 量 means "quantity" or "amount."

⚫︎ 重さ (おもさ): This also means "weight" or "heaviness." It is perhaps a more common, everyday word for weight. ⚫︎ 質量 (しつりょう): This refers to "mass" which is a related but distinct concept. Mass refers to the amount of matter in an object, while weight is the force of gravity on that mass.

⚫︎ 軽さ (かるさ): "Lightness," the opposite of weight. ⚫︎ 軽量 (けいりょう): This word means "lightweight." It's often used to describe things that are designed to be light.

この箱の重量はどのくらいですか？ ・Translation: How much does this box weigh? ・Explanation: This sentence uses 重量 to ask about the physical weight of an object.

飛行機の重量制限を守らなければなりません。 ・Translation: We must adhere to the weight restrictions of the airplane. ・Explanation: This sentence illustrates the use of 重量 in a practical context, concerning safety regulations.

The word 重量 is a compound word formed from two kanji. 重 (jū) means "heavy" or "weight," and 量 (ryō) means "quantity" or "amount." Therefore, the literal meaning is "weight quantity." It reflects the concept of measuring how heavy something is.