This is the 3859th most frequent Russian word.
антон
"Антон" is a Russian male given name, equivalent to "Anton" in English.
Here, Антон is a proper noun (a person's name) and acts as the subject of the sentence.
Антон пришёл домой вовремя.
Anton came home on time.
In this sentence, Антон appears in its instrumental case (Антоном), showing its grammatical role in the sentence.
Мы встретились с Антоном в кафе.
We met with Anton at the cafe.
Антон here is in the dative case (Антону), indicating possession or attribution.