This is the 586th most frequent Bulgarian word.
причини
"Причини" in English means "reasons" or "causes."
Here, 'причините' is a noun in its definite plural form meaning 'the reasons', and is used as the direct object in the sentence.
Той ми обясни причините за своето решение.
He explained to me the reasons for his decision.
In this sentence, 'причини' is a noun in its plural indefinite form meaning 'reasons', and serves as the subject of the sentence.
Само сериозни причини могат да оправдаят такова поведение.
Only serious reasons can justify such behavior.
In this case, 'причини' is a verb form in the third person singular of the aorist tense, meaning 'to cause,' showing its use as an action.