Got me! Haha, you're right, a liberal arts major should know her parts of speech better!
While envy is a simple pining for something someone else has (it's a noun or verb), jealousy is defined by rivalry and resentment toward another (an adj). You're right, envy is much easier, on the whole.
I still hold to the point that jealousy is insecurity, and insecurity is fear. And all we have to fear is fear itself, right?