부럽다(bu-reop-da, bureopda)
Used to express admiration or desire when seeing someone else's good qualities or situation.
When to use
Friend's success, Owning cool things, Admiring happy situation
The nuance
Mainly expresses positive or neutral admiration, used when envying someone’s happiness or success.
질투하다(jil-tu-ha-da, jiltuhada)
Used when feeling negative emotions due to possessiveness or fear of losing what someone else has.
When to use
Romantic rivalry, Possessiveness, Expressing negative feelings
The nuance
Negative emotion involving possessiveness, often expressing rivalry in love or relationships.