What Is the Difference Between Material Science and Materials Engineering?

From the context of the degrees offered by US Universities.

From the context of the degrees offered by US Universities.

Or is it two different names for the same discipline?

I am unsure of which to major in, they seem very similar. Do they both produce new products? It seems Chemical engineers only invent the processes, so I’m slightly confused. Thanks!

I am quite confused about these two and am interested in innovation rather than how materials are processed. Which one of the two can fit this request?

I am a little confused. Why is possible to have a mechanical advantage greater than 1 but you cannot have a mechanical efficiency greater than 100%

these are two different programs and they offer bachelor of science and bachelor of engineering. they sound similar but give different bachelor degrees. what are the actual differences?
also, what does undergraduate mean?
thanks a lot.

Also, I know mechanical engineering is an extremely broad field, but if you just focus on automotives, what exactly does a mechanical engineer do?