So far we have discussed subclasses of the Material clothing entity class. But some classes are not material entities. If we want to describe spaces, we need to account for immaterial entities.

Physical clothing entityhas subclassImmaterial clothing entityhas subclassSpace of clothing
has subclassSpace of shirt

Spaces have been defined for each region of the shirt.


Buttonholes are another type of space described by the Shirt Ontology. Each buttonhole is a class.

Space in shirthas subclassShirt buttonholehas subclassButtonhole of collar band

In the FMA

The FMA contains classes for a large number of spaces. One of these is Cavity of stomach, the space surrounded by the Wall of the stomach. Another is the Uterotubal orifice, which is the opening between the Uterus and Uterine tube.