The full path name of a directory or a file begins with a slash (/) and describes the entire directory structure between that file (or directory) and the root directory. However, you can often use a much shorter name which defines the file or directory relative to the current working directory.
When you are in a parent directory, you can move to a subdirectory using only the directory name and not the full path name. In the previous example, the command cd veggies uses the relative path name of the directory veggies. If the current working directory is /home/user2, the full path name of this directory is /home/user2/veggies.