Size
The Akita is much larger: about 45 kg (100 lb) as an adult, against 22 kg (47 lb) for the Norwegian Elkhound.
Lifespan
In UK vet records the Norwegian Elkhound lives longer: a median of 12.9 years, against 11.4 for the Akita.
Grooming
The Norwegian Elkhound needs more grooming, brushing a few times a week, where the Akita needs a brush once a week.
Exercise
Plan for plenty of exercise with the Norwegian Elkhound, and a moderate amount with the Akita.
Temperament
They differ most on voice (Akita: quiet; Norwegian Elkhound: very vocal) and on affection (Akita: likes its own space; Norwegian Elkhound: affectionate on its own terms).
Alike
Both are rated the same on independence: decides for itself.