Stealing vs Appropriation

Considering I do not actually know what appropriation actually means: I think it must be either the opposite of stealing or something that is better than stealing. So maybe stealing, taking someone else's things without asking, isn't okay; but taking it while siting it or something cool like that is okay. That is what I think the difference could be. But maybe Z is just trying to trip us up and appropriation is really the appropriate name for a baby zebra or something.
This image represents appropriation! (I hope)