Best-loved and Sweetheart

Best-loved adjective - Preferred above all others and treated with partiality.

Sweetheart and best-loved are semantically related. in preferred topic. In some cases you can use "Sweetheart" instead an adjective phrase "Best-loved".

Sweetheart adjective - Privileged treatment of a favored person or corporation (sometimes unethically).

Best-loved and sweetheart are semantically related. Sometimes you can use "Best-loved" instead an adjective "Sweetheart".