 According to hylomorphism, objects consist of matter and form (see entry on  form vs. matter).  Objects are comprised of various parts: electrons and upquarks, for example. In addition to these ordinary material parts, objects have rather special components or constituents—forms—property-like items that inform the matter of their host substance. Forms give objects structure and shape and are what make each object the kind of thing it is. Forms account for the character or nature of objects; they are property-like in that respect. Socrates, for example, is a human animal comprising form and matter; and Socrates is a human animal because he has a certain form as a constituent.