I’m not stupid, but: what’s the difference between envy and jealousy?

I thought since I’m known the world over as a pedantic git and someone who has an unrelenting desire to share crateloads of useless knowledge with everyone he meets, I’d start this series on my blog that I call I’m not stupid, but… In this series I try to explain those things that I’ve encountered that are very simple to understand but for some reason it took me some years to grasp, perhaps because no one bothered to teach me about them, in school or otherwise. I’ll start with one of my favourites, because once you know this, you’ll see the mistake everywhere and (if you’re like me) constantly have to fight the urge to correct people. I’ve noticed, also, that many novels contain passages that highlight this...