I find the difference quite subtle. In Spanish I'd say: Ownership: Titulariedad Property: Propiedad I hope this helps

Property usually refers to houses, land, buildings. Ownership refers to anything else that is yours. Ex: This house is my property. Ex: I own that boat.

I would say: I own one property. So the ownership of this property is mine. I think, Property is an objet and ownership the legal possession. Any native to give us a hand??