This is the 7383rd most frequent Russian word.
головченко
"Головченко" is a Russian surname and does not have a specific definition in English; it is a proper noun.
Here, 'Головченко' is used as a surname of a person being discussed. Commonly, surnames are used as proper nouns in Russian.
Головченко сегодня выступил на конференции.
Golovchenko spoke at the conference today.
'Головченко' again serves as a surname but is used to specify an individual's role in the context.
Среди участников был и Головченко, который представлял свою компанию.
Among the participants was Golovchenko, who represented his company.
The surname 'Головченко' identifies a specific person who is notable in a certain domain.