This is the 173rd most frequent Slovenian word.
nič
"Nothing" or "zero."
Here, 'nič' is used to denote 'nothing' as a direct object in a negative sentence.
Nič ne morem narediti.
I can't do anything.
In this sentence, 'nič' again signifies 'nothing', this time as the subject of the subordinate clause.
Bojim se, da se nič ne bo zgodilo.
I'm afraid that nothing will happen.
Once more, 'nič' represents 'nothing', being used as a predicate here.