One of the most used password pentesting method is password dictionary attack. In this case, the cracking tool sequentially checks all possible passwords stored in special files called password dictionary.
Typically, password dictionary store frequently used passwords and familiar words, such as names and place names.
Password Dictionaries may contain words from various languages of the world. Password crackers check them one by one in search of a suitable one.

If you decide to use password dictionary attack, you will need some basic dictionaries or whats called password list.
[Read more…] about Password Dictionary where to download and how to make them