As Homer Simpson noted^, jealousy and envy mean different things. If you're jealous, you're worried someone will take something away from you, whereas an envious person just wants to get other people's success for themself.
I'm not a native speaker, but my (Apple) dictionary definition doesn't match Lisa's.
jeal·ous | ˈjeləs | adjective feeling or showing envy of someone or their achievements and advantages: he grew jealous of her success.
Excerpted from the OED:
> 3. Solicitude or anxiety for the preservation or well-being of something; vigilance in guarding a possession from loss or damage.
> 4. The state of mind arising from the suspicion, apprehension, or knowledge of rivalry:
> b. in respect of success or advantage: Fear of losing some good through the rivalry of another; resentment or ill-will towards another on account of advantage or superiority, possible or actual, on his part; envy, grudge.
You're focusing on definition (3), but ignoring other aspects found in (4.b).
If you're not aware, "literally" also now literally means "figuratively".
It's memes all the way down.
Modern, and especially colloquial, usage tends to be as a synonym of “envious”, so far as I know. “I’m jealous of her hair”. “His Instagram posts of his beach house make me so jealous”. “Stop mocking her car—you’re just jealous”. I don’t think I’ve ever heard or seen the older meaning intended in colloquial speech or all but the stuffiest of writing in the last 20+ years.
So, as is typical, two useful words have become one word through misuse.