Darling is a term of endearment used to address someone you love or care about deeply.
Common usages include:
1. Between romantic partners: "Good morning, my darling."
2. Parents to children: "Come here, darling."
3. As a general term of affection: "You're such a darling!"
4. In British English, sometimes used casually between friends.
5. Can be used sarcastically: "Oh darling, you're late again."