What's the difference between UI benefit and EUC benefit?

I was recently laid off and have been notified that I'm not qualified for Unemployment Insurance benefit, but I'm eligible to receive the Emergency Unemployment Compensation benefit. What is the difference between these two benefits? I live in Colorado by the way. Thanks for helping.
Update: Wait, so does that mean I won't be able to receive even EUC benefit after a certain length of time? If so, how do I find out how many weeks I will be able to receive the benefit?

I have another quick question. Does EUC benefit give you the same amount of funds as UI benefit?
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