How to say "brick" in Japanese

• れんがJLPT N2approx.Common
  nounThe common word for the ordinary sense of brick: a single fired-clay block, or bricks as a material for walls and chimneys. Usually written in kana; the default choice in most contexts.
  あの家いえはレンガ造つくりだ。↗

  That house is built of bricks.
• 瓦石がせき
  nounA less common collective term covering roof tiles, stones, and brick as material, often suggesting the rubble of a collapsed building. Seldom the word for an individual brick; for that, れんが is the natural choice.

For a brick as an object or building material, use 「れんが」; 瓦石 is a less common collective word for tiles, stones, and brickwork, typically suggesting rubble, and is rarely what you want for a single brick.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• れんがbrick
• 瓦石がせきbrick