General term for materials used in construction, manufacturing, or other projects. Often appears in compound nouns like 建築用材 (building materials).
This factory produces construction materials.
Specifically refers to wood used as a material, especially in construction or woodworking.
It is difficult to secure high-quality lumber.
Compound of 用 (use, purpose) and 材 (material, lumber). The reading ようざい is the standard on'yomi combination.