getdate() and getutcdate()

HI, 

I'm just wondering to know the difference between below

Select getdate()
2014-02-21 11:43:08.607
select GETUTCDATE()
2014-02-21 16:43:08.607

Why is the result is different and what is the difference between both?

getutcdate() giving as 4:43 feb 21st 2014 which is not yet.. Just wondering what is the difference between them?

Thanks.