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This research is done on the series of books written by John Norman, the comments in italics are mine and my point of view.
Woman of Gor
There were various matches in the pit of sand that
evening. There was a contest of sheathed hook knife,
one of whips and another of spiked gauntlets.
Assassin of Gor, page 120

Bosk whip

Beside him, coiled, perhaps as a symbol of power, lay
a bosk whip Nomads of Gor, page 43

Kurt

A stout whip, with a long handle, which might be
wielded with two hands, and five dangling, soft, wide

Snake whip

Heavy coil, laced with wire and flecks of iron. Used primarily on male slaves/captives. Beasts of Gor, page 161

Whip knife

The important point, however, in the circumstances was that Kamras had proposed the sword as the weapon of his encounter with
Kamchak, and poor Kamchak was almost certain to be as unfamiliar with the sword as you or I would be with any of the more
unusual weapons of Gor, say, the whip knife of Port Kar or the trained varts of the caves of Tyros. Nomads of Gor, page 124

The whip knife is a delicate weapon, and can be used with elegance, with finesse; it is, as far as I know, unique to Port Kar.
Raiders of Gor, Page 109

. . .coiled at the side of his saddle, in four loops, was a whip knife, of the sort common in Port Kar, a whip, but set into its final
eighteen inches, arranged in sets of four, twenty thin, narrow blades; the tips of whip knives differ; some have a double-edged
blade of about seven or eight inches at the tip; others have a stunning lead, which fells the victim and permits him, half-conscious,
to be cut to pieces at the attacker’s leisure; the whip knife of Menicius, however, held at its tip the double-edged blade, capable of
cutting a throat at twelve feet. Assassin of Gor, Pages 363-364
Weapons of Gor
Whips & Things