レンガ（レンガ、renga）
- brick

The Japanese word レンガ (renga) refers to a brick. It's a fundamental building material, typically rectangular in shape, made of fired clay or other materials, used for constructing walls, pavements, and other structures. The word directly denotes the physical object, the brick itself.

⚫︎ レンガの壁は頑丈です。 Translation: The brick wall is sturdy. ⚫︎ 庭にレンガを敷きました。 Translation: I laid bricks in the garden. ⚫︎ この建物は古いレンガで作られています。 Translation: This building is made of old bricks.

You use レンガ in conversations when discussing construction, architecture, gardening, or anything related to the physical brick. It’s a straightforward noun, and its usage is similar to how you would use "brick" in English. You can use it in various contexts, from describing a house made of [レンガ] to talking about a pathway paved with [レンガ].

レンガ is primarily written in katakana, as it’s a loanword from the English word "brick." It's almost always written in katakana and doesn't typically have a kanji representation. There are no variations in okurigana.

There aren’t direct, one-word synonyms for レンガ in Japanese that mean "brick". However, depending on the context, you might use: • 煉瓦 (れんが) (ren ga) - This is the same word as レンガ but written with kanji and hiragana. It is more formal.

The direct antonyms of レンガ are not really available in the sense of a single word. Depending on the construction material discussed, it is often possible to substitute with similar words in a discussion like: • 木材 (もくざい) (mokuzai) - lumber • 石 (いし) (ishi) - stone

その家は赤いレンガで造られています。 ・Translation: That house is built with red bricks. ・Explanation: This sentence describes the material used to build the house. The word [レンガ] specifies the material.

この道はレンガで舗装されています。 ・Translation: This road is paved with bricks. ・Explanation: This sentence describes the construction of a path, using [レンガ] as the primary material.

The word レンガ comes directly from the English word "brick." It was adopted into Japanese and written in katakana to represent the foreign word.