In one of the classes I teach at CCA, students were confused by mental models, conceptual models, concept maps, etc. I ended up drawing a taxonomy for models on the whiteboard, and it may help others. This post is for them first, then you!
Admittedly, there is no worldwide agreement on these terms, because humans make things and name them as they see fit, often without searching for previous work. UX Design (a.k.a. product design a.k.a. interaction design a.k.a. information architecture etc etc) has a tendency to name and rename things. Ambiguity is inevitable.
I live in hope of a controlled vocabulary for digital design.