What is difference between zfs and ufs?

kirolos gerges <[email protected]>
Newsgroups gmane.os.freebsd.questions
Message-ID <CAHtyqUQ8crx=rtf3=ZtXQKZMO-maoT8AvU8J5b626MZXs0UEzA@mail.gmail.com> 
Same as title , i dont really get difference between them
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