Some genera occur below other genera and above still narrower genera or species. They therefore occupy different ranks in a hierarchy.
Body → growing body → animal → human
In this classical order:
Body — broader category.
Growing body — narrower than body.
Animal — narrower than growing body.
Human — a species under animal.
A middle term can function as genus relative to what lies below and as relative species with respect to what lies above.
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The Five Predicables: Genus, Species and Hierarchy of Genera
Some genera occur below other genera and above still narrower genera or species. They therefore occupy different ranks in a hierarchy.
Body → growing body → animal → human
In this classical order:
Body — broader category.
Growing body — narrower than body.
Animal — narrower than growing body.
Human — a species under animal.
A middle term can function as genus relative to what lies below and as relative species with respect to what lies above.