In an hierargical ontology definition I'm stating that: Artist <= Person <= Human <= Mamal <= Thing or Phone <= Product <= Thing. I could also do the same for Walking <= Moving <= Action.
This creates a tree structure with at the top of the hierarchy: Things and Actions.
What single word can I use above Things and Actions to combine both?
So that I'll get:
Artist <= Person <= Human <= Mamal <= Thing <= ???Walking <= Moving <= Action <= ???