Difference between Freeze and Split in Open Office Calc

I have Open Office Calc installed in my computer, it’s also a spreadsheet software equivalent to MS Office Excel . I just want to know what is the difference between Split and Freeze functions in Calc. I used to use Freeze but I can't really tell the difference between the two. I don't have Excel right now installed but I'm pretty sure Excel has Freeze and Split as well, but then again what's the main difference?
