Underscore_ or - in url 2021?

Question

Search Engine Optimization

Hello! Tell me, is it possible to use underscore in url in 2021? Will this cause problems? Will the site be normal, displayed in the SERP?
As an example:
https://site.ru/tovary_povsednev_leto/shorty_class

Thank you!

PS Everywhere only old infa 2005-2013. Maybe someone knows the current information) The site is made with an underscore ( _ ) and to fix something else hemorrhoids ...

Answer 1

Speaking from the SEO side, it is desirable, of course, to use a hyphen, and not an underscore.
For example, this is suggested by Google here .
If you have keywords in the url, then when you separate them with an underscore, Google will not be able to find a page for these keywords, unlike the case when the words are separated by a hyphen.
For Yandex, it doesn't matter how you separate the words in the url.

Answer 2

IMHO, that in 2005, that in 2025, there is only one answer - do not care

Answer 3

It seems that from time immemorial the dash is everywhere the standard, why bring confusion?

Answer 4

There is no difference in ranking. But the dash is most commonly used.

Answer 5

There will be problems with _, in the URL you need to use only -
For example, Google perceives - as a word separator, but does not perceive _ in any way.