With the joint efforts of me, @amreendanish & @hibashaikhpk the Urdu translation of Gravatar is now completed. We should request the WordPress Admins to activate the Urdu language on Gravatar website as soon as possible.
WordPress Urdu Glossary has been added for your help. Please check translation of basic terms in Glossary. To access it, direct link: https://translate.wordpress.com/projects/wpcom/ur/default/glossary/