This is the 582nd most frequent Bulgarian word.
половина
"Половина" in English means "half."
Here, 'половин' functions as an adjective describing a quantity of time, specifically indicating half an hour.
Той пристигна точно след половин час.
He arrived exactly after half an hour.
In this sentence, 'половината' is a noun indicating half of an amount, specifically referring to a portion of the cake.
Аз изядох половината от тортата.
I ate half of the cake.
In this sentence, 'половини' is the plural form of the noun 'половина,' meaning halves, referring to the equal parts of the divided task.