Fate and karma same or different? I do not understand the difference between karma and fate; are they the same or different?
All the things happen is not a result of Karma.
Actually in Buddhism there are Fivefold Niyama where as Karma Niyama is a just one of them.

The Fivefold Niyama is as follows

uthu-niyama: the caloric order, the climate of the geographical location.

bija-niyama: the germinal order, things you inherited from the genes.

kamma-niyama: the moral order, is the one you are talking about.

chitta-niyama: the psychical order. 

Dhamma-niyama: natural phenomenal sequence. we all get old and we all die its a natural thing for all of us

more details: http://www.buddhivihara.org/niyama.htm