"Software engineering" is the corporate aspect concerned with the "right" way to do stuff, often picking inadequate analogies from physical manufacturing and traditional engineering. It builds the ungainly, monolith dinosaurs and the technical debt. It is OOP, enterprise Java with the abstract factories, MFC, "agile methodologies" and "agentic workflows". It creates the dogma and the ideologies.

"Programming" is the creative tinkering aspect where you start from scratch and approach a problem from a new light. This is how Unix was born. It is the 1000-line program that is composable, fun to read and write and will last a long time.