This is the 8007th most frequent Russian word.
костобобров
The word "костобобров" does not exist in standard Russian; it may be a misspelling, archaic term, or fictitious word.
Here, 'Костобобров' serves as a proper noun, possibly referencing a specific individual's name or nickname.
Костобобров умеет лазать на деревья быстрее всех.
Kostobobrov can climb trees faster than anyone.
In this context, 'Костобобров' is used as a fictional or symbolic character, representing the theme of the costume.
На карнавале я видел человека в костюме Костобоброва.
At the carnival, I saw a person in a Kostobobrov costume.
Here, 'Костобобров' is employed as a brand name, indicating a commercial designation.