My wife was a great example of this. She was an undergraduate math major, then went on to get her master's and PhD in engineering. The first year of the master's was largely remedial engineering courses - statics and dynamics, thermodynamics, controls, simple electrical circuits, etc.
I asked if she found them difficult. She quipped, "If you already know the math, it's just nomenclature."
I asked if she found them difficult. She quipped, "If you already know the math, it's just nomenclature."