I only now come back to this.
It's because they are cognates :>
Some aren't though, and that's just coincidence then

It was sorta out of respect for the bear, not to call it's name, but yeah haha

There is also other names,
ню̄рмуй
пупакве
ӯнтуй
то̄рев (nowadays only polar bears)
пурнуй
ect.

There are recorded words in other Mansi varieties, like Eastern (Konda) Mansi:

выйяньсих [wɘjænʲsʲix]

Or Souther (Tavda) Mansi:

tå̄rėŋ or äńšuχ ~ äńčuχ

The original word for bear was avoided so much by the Hungarians, we got the taboo name for it from a slavic language.

Northern Mansi had the same, so they don't have the original word for bear neither. They call it во̄рто̄лно̄йка or во̄рто̄лнут "in forest living old man" or "in forest living thing".

Even Mansi say ся̄й
(the macron is wrong on blueksy, that's a shame)

While Uralic languages;

Finnish - äiti
Hungarian - anya
(Northern) Mansi - ся̄нь / ома
(Kazym) Khanty - аӈки
Ingrian - emä
Inari Sami - enni
Kildin Samj - е̄ннҍ
Lule Sami - ieddne
Skolt Sami - jeä'nn
Southern Sami - tjidtjie
Erzya - ава
Estonian - ema
Komi-Zyrian - мам, ань
Livonian - jemа̄

FISH

I'm looking forward to see the Tavda Mansj corpus! It will be tremendously useful!

In October we rolled back with even more Tavda Mansi riddles, showcasing examples of Yannychkovo and Kuzyaeva subdialects – bsky.app/profile/proj.... And, by the way, the release of the Tavda Mansi corpus is almost around the corner! Watch out for updates!

I would like to congratulate you 🫱

-Said Catto calmly...