Absolute Path and Relative Path - Apache Tomcat (ExpertCTStudio)
Relative path: If the application .war file's location need to be changed instead of pointing it to webapps directory to deploy, put the .war file in any desired location and update the appBase attribute in <Host> elements of server.xml and docBase attribute in <context> elements of ROOT.xml accordingly.
Absolute Path: This is the standard path that is assigned to the webapps directory.