On-the-spot and There and then

On-the-spot adjective - At the scene of action.

There and then and on-the-spot are semantically related. In some cases you can use "There and then" instead an adverb phrase "On-the-spot".

On-the-spot and there and then are semantically related. Sometimes you can replace phrase "On-the-spot" with "There and then", this phrases are similar.