if something has the role of something else then that something is an example of that something else
person is individual_unlike_other. else is river. thing is object. change is when_one_thing_becomes_another_thing. space is what_between_else. people is synonym_for_persons. persons is synonym_for_people. everything is one_thing. puttingsomethingintosomethingpartway is putting_into_else. anything_else is film.