The classic example of getting this wrong is probably C# developers using IEnumerable when they should’ve used IQueryable.
Or literally any function from the standard library in C++, which will likely have undefined behaviour if you look at it wrong and didn't read the docs.
The closest thing coming to mind to me is mixing up IEnumerable and IEnumerator when trying to define a coroutine.
Not every C# developer knows the difference, in my region of the world it’s an infamous mistake and is often the first thing you look for when tasked with improving bottlenecks in C# backends. On the flip-side, using IQuerable isn’t very efficient if what you wanted was to work on in memory collections.
There is an equally infamous somewhat related issue in Python with list vs generators. Especially common when non Python developers work with Python.
Thank you for the explanation.