Steppe polecat vs Stoat

The steppe polecat is heavier: 1.68 kg against 119.4 g for the stoat, about 14 times the weight.

What is the difference between a steppe polecat and a stoat?

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

The steppe polecat is heavier: 1.68 kg against 119.4 g for the stoat, about 14 times the weight.
The stoat is longer-lived: 11.1 years against 11.1 years for the steppe polecat, about 0% longer.
Both belong to the genus Mustela, so they are close relatives.
Both are listed as Least Concern on the IUCN Red List.

	Steppe polecat	Stoat
Scientific name	Mustela eversmanii	Mustela erminea
Family	Mustelidae	Mustelidae
Order	Carnivora	Carnivora
Weight	945 g – 1.68 kg	110.3 g – 324 g
Length	Not recorded	Not recorded
Lifespan	11.1 years	5 years – 11.1 years
Main food	Not recorded	arvicola amphibius, european hamster, ochotona, poponejo
Habitat	grassland, shrubland	forest, shrubland
Conservation status	Least Concern	Least Concern
Countries recorded	Not recorded	1

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