When hands in Kapitta hasta is held crossed at the wrists we get the Bhairunda hasta. Some times this hasta is done without crossing the wrists also. Hands in kapitta just join at the wrists.

Lets take a look at the viniyoga shloka (uses)
bhairunde pakshidampatyor bhaiundo uchyate karah.
In Sanskrit the word Bherunda or bhairunda means terrible. [...]