Aspects include include the bonds of Qualities, Actions and Relationships.
Some are alive, some are not; some are big and some are small and some have hooves and some have wings.
The major bond is portage, and we will place them all in the same category and give them all the same name--transportation.
Relations refers to correspondence of one object to another. There are many types of relations: Spatial, temporal, personal (such as possession), professional, and so forth.
Spatially, instructors usually stand in front of and facing a class of individuals. You can classify them on the basis of their position relative to the students or the classroom.
Temporally, if I frequently come to the class I teach on campus past the time class begins, I am liable to be put into a category of folks called ex-employees.
Personally, there are a certain class of objects that have particular relevance to me as I, for example, pack up my desk. I call them mine.