Pattern Builder and Factory

Builder and Factory are two different pattern, obviously. But sometimes I get confused because of their name. Both patterns act as object manager, they create object and hide the creation from user.

Factory is used to create object in an object family. Usually I pass a static number and the factory will go through if-else condition to decide what object to create.

Builder on the other hand, create an object based on some object characteristics. For example we have an xml file that holds object's state, and we want to create an object based on the file. We then pass the xml, then the Builder will create the object for us.