Difference between Killer Whale and Orcinus Orca

KILLER WHALE vs ORCINUS ORCA: NOUN

A sea mammal related to dolphins and porpoises.
See killer{2}.
Predatory black-and-white toothed whale with large dorsal fin; common in cold seas

Predatory black-and-white toothed whale with large dorsal fin; common in cold seas

Manatee, Whale shark, Gray whale, Bottlenose dolphin, Shark, Porpoise, Humpback whale, Sea lion, Dolphin, Whale, Sea wolf, Killer, Grampus, Orcinus orca, Orca

Humpback, Fin whale, Bottlenose, Manatee, Whale shark, Gray whale, Bottlenose dolphin, Shark, Porpoise, Humpback whale, Sea lion, Dolphin, Whale, Killer, Orca

Killer whale advocates point out it has a long heritage.
Youtube videos about his favorite animal, the killer whale.
Renaissance in the Belly of a Killer Whale!
Killer whale monitoring in the Eastern Canadian Arctic and their potential effects on the beluga whale population in western Hudson Bay.
First study of humpback whale survivors of killer whale attacks in the Southeastern Pacific show may be on the rise.
Additionally, the only known attacker of the blue whale in the ocean is the killer whale.
Navy biologists will work with NMFS to determine the likelihood of gray whale and Southern Resident Killer Whale presence in the planned training location.
Cook Inlet beluga whale and MHI insular false killer whale designations.
We believe it extremely unlikely that any large whale, beaked whale, or killer whale would be captured or entangled in SWFSC research gear.
The killer whale was originally called "whale killer" by Spanish whalers.

Killer whales: The natural history and genealogy of Orcinus orca in British Columbia and Washington State, Vancouver, University of British Columbia Press.
Acoustic behaviour of resident killer whales (Orcinus orca) in British Columbia.