<human>:  What's the difference between anxiety and depression?
<bot>: Anxiety and depression are both mental health disorders that can lead to intense feelings of distress, but they have important differences. Anxiety is typically characterized by excessive worry, fear, and uneasiness, while depression is typically characterized by a sense of helplessness and a persistent low mood. Anxiety disorders are often linked to a fear of an upcoming event or a response to an external trigger, while depression is generally thought to be due to a chemical imbalance in the brain.