Abstract object theory Not to be confused with Object theory. See also; Abstract and concrete Abstract particulars Abstractionism (philosophy of mathematics) Guise theory Linnebo, Øystein Mally, Ernst Mathematical universe hypothesis Meinong, Alexius Modal Meinongianism Modal neo-logicism Abstract and concrete In philosophy, Examples of abstract and concrete objects: ...........Abstract.................................................Concrete................................... Tennis............................................................A tennis match Redness.........................................................Red light reflected off of an apple and hitting one's eyes Five................................................................Five cars Justice............................................................A just action Humanity (the property of being human).....Human population (the set of all humans) https://en.wikipedia.org/wiki/Abstract_and_concrete
More examples: Abstract ............. Concrete Love ................... A loving action Rectangle .......... A door with this form Country .............. France Ideas .................. A speech Sphere ............... A ball Table .................. That table
Supernatural. Ghosts(apparently some ghost hunters believe if they see an "orb" in the dark using a special camera it is a ghost. Natural and Super natural Matter vs an entity with no matter.