This is the 200th most frequent Slovenian word.
kdo
"Who"
In this sentence, 'kdo' is used as an indirect question within a statement, referring to the identity of the person.
Ne vem, kdo je to rekel.
I don't know who said that.
Here 'kdo' is used as a question word meaning 'who', inquiring about the subject coming to the party.
Kdo prihaja na zabavo?
Who is coming to the party?
The word 'kdo' functions as a question word within an embedded question, referring to the person in need of help.