If my main character goes to a new building – let's say in the beggining of a short story – and I describe the facade and the design of the building, is this exposition (i.e. information that is not part of the story, in this case of setting, location), or is this just description in this particular scene? Let's consider that the building is not that important to the story and the character will not return to it.
I'm having some problem in understanding the difference between setting / location exposition (background information: https://en.wikipedia.org/wiki/Exposition_(narrative) ) and description.
Backstory of characters or whatever information or concepts I might "teach" is clearily exposition.
Character description is clearily just description.
I know that exposition can be delivered by description, as it can be delivered by dialogue, action or just info statements. But the location descriptions are still confusing for me if I should consider exposition or not.