This is the 7835th most frequent French word.
serhiy
"Serhiy" is not a French word; it is a Ukrainian given name.
In this sentence, 'Serhiy' is used as a proper noun referring to a given name.
Serhiy est un nom ukrainien courant.
Serhiy is a common Ukrainian name.
Here, 'Serhiy' is again a proper noun, referring to a specific individual by their name.
J'ai discuté avec Serhiy hier à la réunion.
I talked with Serhiy yesterday at the meeting.
'Serhiy' in this context identifies an individual known as an author or poet.