While "ecstasy" can be used as a noun to describe a feeling of intense happiness and elation, it's already an abstract noun. It represents the feeling itself, not a physical object or tangible thing.
Here are some examples:
* "She felt pure ecstasy as she watched her child take their first steps."
* "The music induced a state of ecstasy in the audience."
* "He was overcome with ecstasy at the news of his promotion."