Answer 1

A path is the unique location of a file in a system.

An absolute path contains all the folders until the file name and extention and it is used when the file is not in the same folder as the .html file
Ex:
"C:\user\desktop\hello.png"

A relative path is just the name of the file you want to link and it must be in the same folder as the .html file.
Ex:
"hello.png".

You can use absolute path for files in the same folder as well but it is a waste of time and it looks unprofessional.