This is the 8067th most frequent Russian word.
куйвашев
"Куйвашев" is a Russian surname and does not have a specific definition in English.
Here, 'Куйвашев' is used as a proper noun to refer to an individual holding the title of governor.
Куйвашев является губернатором области.
Kuyvashev is the governor of the region.
In this context, 'Куйвашев' again refers to a specific person, emphasizing his achievement.
На выборах победил Куйвашев.
Kuyvashev won the elections.
Here, 'Куйвашев' is used in the instrumental case ('Куйвашеве') to indicate reports or mentions concerning this individual.