Hi,

In my sharepoint site, I am using a termset for global navigation
I have created a second termset and created terms and  linked with different pages in navigation 

Now I would like to use this second termset  in the titlebar of one page while continue to use
 first termset for other pages
Please suggest if any way possible
or I can hide first termset on that page and show second
or any option

Hi,

Please try to use the CSS or jQuery to hide the first termset and show the second in UI.

Or check the thread below:

https://social.msdn.microsoft.com/Forums/sharepoint/en-US/2d547bc5-78c4-4122-bf74-140cfc701b74/hide-termsets-within-the-managed-metadata-user-inteface-?forum=sharepointcustomizationprevious

Here is a solution about Global Metadata Navigation for your reference:

http://sp2013globalmetadatanav.codeplex.com/

Best Regards