General Happiness:
* Joy: A feeling of great happiness and pleasure.
* Delight: A feeling of great pleasure and satisfaction.
* Bliss: A state of perfect happiness and contentment.
* Cheer: A feeling of happiness and optimism.
* Exuberance: A feeling of lively and energetic happiness.
* Contentment: A state of being satisfied and happy.
Specific Types of Happiness:
* Elation: A feeling of intense joy and excitement.
* Rapture: A feeling of overwhelming joy and delight.
* Euphoria: A feeling of intense happiness and well-being.
* Jubilation: A feeling of great joy and triumph.
* Giddiness: A feeling of lighthearted and carefree happiness.
Happiness as a State or Condition:
* Serenity: A state of calm and peaceful happiness.
* Tranquility: A state of quiet and peaceful happiness.
* Harmony: A state of peaceful and balanced happiness.
Metaphorical Representations:
* Sunshine: Can represent happiness and warmth.
* Rainbow: Can represent joy and hope.
The best noun to use will depend on the specific situation and the emotional tone you want to create.