This is the 928th most frequent Bulgarian word.
кого
"Кого" means "whom" in English.
Direct object in the question, targeting the person seen.
Кого видя в парка?
Whom did you see in the park?
Direct object in an indirect question, referring to the person to ask.
Тя не знае кого да попита за помощ.
She doesn’t know whom to ask for help.
Direct object indicating the person chosen for the position.