problem of universals
Abstract and concrete
Bundle theory
Constructor theory
non-physical entity
, an object that exists outside physical reality
Object
(philosophy)
Qualia
Philosophical realism
Reification
(fallacy), a fallacy of ambiguity when an abstraction is treated as if it were a physical entity
Self
Similarity
(philosophy)
Transcendental nominalism
Tianxia
Ubuntu philosophy
Fallacy of composition
https://en.wikipedia.org/wiki/Problem_of_universals