Welcome the Technical Support section. Help us in assisting you by providing us with a concise and descriptive elaboration of your issues. Be specific and if possible, provide us with a step-by-step instruction in replicating your problem.
Those are module Titles. Go to Joomla Admin back-end:
find desired module (search for Title) and change its Title to whatever you like. Hit Save&Close and You are ready to go. Change is visible on webpage refresh.