设施
shèshī · HSK 4
facilities
🏗️ 设 = set up + 施 = carry out → set up & carry out = facilities
设 means to establish/set up; 施 means to execute/implement. Together 设施 refers to things that have been set up and put into operation — i.e. facilities or installations like plumbing, equipment, or infrastructure.
设 — speech 讠 + hand holding tool 殳
设 combines 讠 (speech) with 殳 (a hand wielding a tool or weapon), suggesting giving orders to set something up. The original sense was to arrange or establish through command, which extended to today's meanings of 'set up,' 'design,' or 'suppose.'