Arnaud Delorme says: «some call it samadhi some call it enlightement« in the following video:

Samadhi, enlightement, happiness, well-being: not all of these terms are scientifically clearly defined which leads to a confusion. We have perviously discussed this topic in our journal:

Happiness, inner peace & samadhi – how are these mental states defined scientifically & and what happens in the brain?

Why we will not use the term «enlightenment» anymore