Does the [immediate-reaction] tag describe something substantially different from the [reactions] tag?

Question

The immediate-reaction tag currently has no tag info, but there are seven D&D 4e questions with the tag.

reactions is currently used on 92 questions, all but one of which are apparently for D&D 5e. (The only other one is about Mutants & Masterminds. I recently found another M&M question it might apply to, which is what made me discover this issue.)

The tag info for the reactions tag says:

For questions about reactions - an action taken by an entity in response to a trigger happening.

However, because immediate-reaction has no tag info, I can't tell whether it falls under the same category as the reactions tag.

Do these two tags describe essentially the same type of thing? If so, should they be synonymized?

Answer 1

These are not the same thing and should not be synonymised.

reaction is an action economy element of D&D 5e beside your action, move, and minor action. You spend it to do something.

immediate-reaction and immediate-interrupt are timings on when a power occurs. They are not an action economy element and do not interact with D&D 4e's standard action, move action, and minor action.

I have added tag wikis to these two D&D 4e tags.