This is the 4071st most frequent Russian word.
ники
"Ники" translates to "nicknames" or "usernames" in English, depending on context.
In this sentence, 'новичков' uses the '-ники' root suffix form, representing beginners or newcomers as its plural form.
Моя бабушка вяжет теплые шерстяные носки для внуков и новичков.
My grandmother knits warm wool socks for her grandchildren and beginners.
Here, 'горшки' uses the '-ники' derivation, referring to pots or containers and its plural forms.
На кухне были классные горшки разных размеров для готовки.
There were cool pots of various sizes for cooking in the kitchen.
In this context, 'ники' specifically refers to nicknames used by chat participants, using its plural form to denote multiple entities.