I finish work at five.
‘Complete’ is used to mean to make whole.
The jigsaw puzzle is complete.
And ‘complete’ is also used to say that you have finished making or doing something that you are not going to do very often.
He completed his first novel in 1984.
You tend to use ‘end’ for finality.
World War One ended in 1918.
Copied from http://goo.gl/M2EKhJ