Gaiety and Merriness

Gaiety noun - Joyful or festive activity.

Merriness and gaiety are semantically related in merriment topic. In some cases you can use "Merriness" instead a noun "Gaiety", when it comes to topics like laughter.

Merriness noun - A mood characterized by high spirits and amusement and often accompanied by laughter.

Gaiety and merriness are semantically related in merriment topic. You can use "Gaiety" instead a noun "Merriness", if it concerns topics such as laughter.