A pleasure?

The condition or sensation induced by the experience or anticipation of what is felt to be good or desirable; a feeling of satisfaction or enjoyment; delight, gratification. Opposed to pain.

What is a treat?

Something highly enjoyable; a great pleasure, delight, or gratification.

What is “comfort”?

Anything in which one takes delight, or which affords delight; an object of delight; a source of great joy.

In the OED, what

are some examples?