best practice for shadow classes between disease and disorder in OGMS

[cmungall]

When I see a lot of OGMS-based ontologies, I see lots of shadow classes created.

For example

• neurological disease has material basis neurological disorder
• heart disease has material basis heart disorder

is this considered good practice? what are best practices for naming explicit shadow classes? what is a good exemplar ontology here?

(this shadow class problem persists with other branches, I often see X disease, X diagnosis, X disorder, X process, .... but for the purposes of this issue I am interested in disease and disorder branches)