This is the 4613th most frequent Russian word.
делегация
"Delegation" - a group of representatives assigned to represent an organization, country, or group.
Here, "делегация" refers to a group of representatives or officials sent to a location for a specific purpose (negotiations).
Делегация иностранных дипломатов прибыла в город для переговоров.
The delegation of foreign diplomats arrived in the city for negotiations.
In this context, "делегация" signifies a group of people organized to represent different regions at an event (exhibition).
На выставке присутствовала делегация из разных регионов страны.
A delegation from various regions of the country attended the exhibition.
Here, "делегация" is used to mean a group of students representing their university at a conference.