From the engineer's point of view, the difference between the two is quite big.
Scientists are more theoretical, cutting-edge and idealistic. Engineers' thinking focuses more on practice, putting theory to the ground, becoming engineering products, tangible and serving practice.
It can be said that engineers make scientists' theories productized. Like Sheldon and Howard in The Big Bang Theory.
In many cases, the application of preface theory is decades or even hundreds of years earlier than the actual application. Various curve equations have appeared in geometry for a long time, and they were not used to complete the operation of celestial trajectory until astronomy developed to a certain stage.
I still remember a short story written by Liu, but I can't remember its name clearly. It is about a physicist in the future, an important research, who has been stuck by a mathematical problem for a long time. As a result, he saw a long-ago mathematical paper in an abandoned school library, and the mathematical formula in it solved the problem perfectly. He was surprised that such an excellent work and such an excellent mathematician were unknown. The reason is that these works are so advanced that people at that time simply couldn't understand them and didn't know how to use them. The author himself exhausted his own efforts to get the research results.
Perhaps in the eyes of scientists, they all have the beauty of science that they have been pursuing all their lives. In their eyes, complicated and obscure formulas and laws are full of infinite charm.