The word 器材 is formed by combining the character 器, meaning "device" or "instrument", with 材, meaning "material" or "timber". 器 is constructed from elements historically depicting a vessel with multiple openings, while 材 consists of the radical 木 (wood) and the phonetic component 才 (talent), indicating its association with raw materials. Together, they create a compound word where 器 denotes tools and 材 denotes substances, thus referring collectively to equipment or apparatus made from various materials.