Orca vs Risso's dolphin

The orca is heavier: 4.3 t against 387.5 kg for the risso's dolphin, about 11 times the weight.

What is the difference between a orca and a risso's dolphin?

Each point below is worked out from a pair of recorded values.

The orca is heavier: 4.3 t against 387.5 kg for the risso's dolphin, about 11 times the weight.
The orca is longer-lived: 90 years against 30 years for the risso's dolphin, about 3.0 times the lifespan.
They share the family Delphinidae but sit in different genera: Orca in Orcinus, Risso's dolphin in Grampus.
The orca is listed as Data Deficient on the IUCN Red List; the risso's dolphin is Least Concern.

	Orca	Risso's dolphin
Scientific name	Orcinus orca	Grampus griseus
Family	Delphinidae	Delphinidae
Order	Cetacea	Cetacea
Weight	4.3 t	342.5 kg – 460 kg
Length	Not recorded	3.05 m
Lifespan	90 years	30 years
Main food	african penguin, albatross, atlantic bluefin tuna, atlantic spotted dolphin, atlantic wolffish, balaenoptera musculus and 42 more	Not recorded
Habitat	marine	Not recorded
Conservation status	Data Deficient	Least Concern
Countries recorded	Not recorded	Not recorded

A scale drawing needs a recorded length for both animals; only weights are on record for this pair.