Merriment (noun)
a state of enjoyable exuberance
Merriment (noun)
playful fun
Mirth (noun)
The emotion usually following humour and accompanied by laughter; merriment; jollity; gaiety.
Mirth (noun)
That which causes merriment.
Wiktionary
Merriment (noun)
gaiety and fun
“her eyes sparkled with merriment”
Mirth (noun)
amusement, especially as expressed in laughter
“his six-foot frame shook with mirth”
Oxford Dictionary