guide: confusion between params (templating) and param dependencies

[shcheklein]

https://stackoverflow.com/questions/67215839/use-parameters-from-additional-configs-in-dvc-2-0/67221065#comment118833797_67221065

In link it says "To load additional params files, list them in the top vars, in the desired order, e.g.:". This is where my initial confusion originated from.

We need to be explicit that those could not (?) be used as dependencies.

(that's comes back to the discussion on parametrization and params - two terms overlap and confuse people)

[jorgeorpinel]

Yep, we discussed this. AFAIR we don't want to separate the concepts? Params are params whether you use them as substitutions in a dvc.yaml template or as stage dependencies.

But since both uses go in dvc.yaml in different ways, we can def. be more explicit in the UG, would that be enough to solve this issue, or do we want to revisit the terminology itself?