Compare 2 columns, output in 2 other columns

I've been looking for a good way to compare inventories. I've got data in col A&B, which should match. But i've been looking for a way to compare both columns and get the output in Columns C&D.

So I'd like to find a way to get the following:
Column C = What's NOT in ColB, but IS in ColA
Column D = What's NOT in ColA, but IS in ColB

Does anyone have an idea what's the best&easiest way to get something like this? I'm assuming using macros, but i'm not a big expert at that .. Or does anyone have something similar or can put me in the right direction?

Thanks !

Found something similar already, but I had something in mind that just compares the entire columns and puts the output in C&D .. As the data in A&B will be mixed & never on the same line