the.com/polish
The art of making something shine until nobody asks how rough it started.
means To smooth or buff a surface until it gleams, or to refine something rough into something finished and impressive.
from From Latin polire, to make smooth, arriving via Old French polir; the same root that lets you polish silver and polish a speech.
Capital trapCapitalized, it means from Poland, entirely unrelated.
Friction physicsPolishing works by abrading high spots into flatness.
Final stretchPolish is the last ten percent that takes longest.