You can make the content available from one web application to the other by making the content of a list in first web application available in the search of the second web application.
This can be achieved by "Catalog Settings" in a list of which has contents to be made for cross site publishing.
Even this has an issue - We can do this only for whole farm. Not to a targeted web application. This is there only in sharepoint 2013 and not in sharepoint 2010.