I prefer real sources, not the freedictionary, that has the "quality" logic that jealousy arises from feelings of envy. LOL.
http://www.psychologytoday.com/blog...t-is-the-difference-between-envy-and-jealousy
"Envy" and "jealousy" are often used interchangeably in common usage, but the words stand for two distinct emotions.[1] Jealousy is the result or fear of losing someone or something that one is attached to or possesses to another person (the transfer of a lover's affections in the typical form), while envy is the resentment caused by another person having something that one does not have, but desires for oneself.[8]
Sure that's true if you're looking at the original origin and meaning of the words, but in todays language the two words have become synonymous.