The training of scientists and engineers are similar but different. Both learn basic science and the associated mathematics. Scientists learn more advanced science so they can further advance science. Most study until they achieve a Ph.D. so they are qualified to make further discoveries. Engineers study subjects which are specifically useful in designing useful things but are, for the most part, not useful to scientists.
Examples are the strength of beams and the performance of motors.
Most engineers are qualified for useful work without reaching the Ph.D. in college.