The form is indeed substance but it is not substance over and above the substance of the concrete entities which it characterizes.

In object-oriented programming, a BaseBean is a utility object from which concrete entities are derived (via subclassing).

Basically, individual concepts deliver semantic objects or abstract functions instead of real concrete entities as in CT.

In philosophy, particulars are concrete entities existing in space and time as opposed to abstractions.

These usually refer to concrete entities rather than abstract concepts, but the distinction is not always clear.

This view distinguishes him from the influential modal realist David Lewis, who argued that possible worlds are concrete entities just like this world.

(Speech-sound events are concrete entities, located in space-time.)

The entity defined as item is a concrete entity.

GFO (General Formal ontology) draws a fundamental distinction between concrete entities, categories and sets.

A value type, then, is a correspondence between a set of data and a set of abstract or concrete entities sharing characteristic attributes.