Beginner Question

Hello, i am a new user of SAp XI and i have a couple of simple questions.

1-Is it possible to import namesapces from one software component to another DIFERENT software component?. i am not intrested to import namespaces from one software component version to another.

2-has some study the demo SAP BASIS 6.40? are the http://sap.com/xi/XI/System and http://sap.com/xi/XI/System/Patterns Namespaces reusable for others product of any nature? do they provide a standart infrastructure?

thank u very much.