Translation guide
The word 'timber' can refer to trees suitable for wood, wood as a building material, or a piece of wood used in construction. This guide covers how to express these concepts naturally in Japanese.
The material obtained from trees, used for construction and carpentry.
The most common and general term for wood as a material, used in construction, furniture, etc.
この家は木材でできている。
This house is made of timber.
Often used interchangeably with 木材, but can emphasize cut and processed lumber ready for use.
材木を買いに行く。
I'm going to buy some timber.
Trees grown or suitable for harvesting as wood.
A descriptive phrase meaning 'trees for timber'. Natural when specifying the purpose of the trees.
この森には木材用の木がたくさんある。
This forest has a lot of timber trees.
A technical term for timber trees or lumber, used in forestry contexts.
用材として植林する。
Plant trees for timber.
A single beam, plank, or log used structurally.
Refers to squared timber, such as beams or posts. Common in construction.
角材を柱に使う。
Use timber for the pillars.
Can also refer to individual pieces of wood, though it's broader.
Specifically a log, often with bark still on. Used for rustic construction or as raw material.
A shout to warn that a tree is falling.
There is no direct equivalent. Shout 気をつけて (be careful) or 木が倒れる (the tree is falling). In logging contexts, 倒れるぞ is used.
倒れるぞ！
Timber! (It's falling!)
気をつけて！木が倒れる！
Watch out! The tree is falling!
Both mean 'timber' or 'lumber'. 木材 is more general and common. 材木 often implies processed lumber ready for sale or use. In many contexts they are interchangeable.
材木 usually refers to cut wood, not trees still growing. Use 木材用の木 or 立木 (standing trees) for the living resource.
大きな木材を運ぶ。
Carry a large piece of timber.
Build a log cabin.