This is the 380th most frequent Croatian word.
nikada
"Never."
In this sentence, 'nikada' means 'never' and refers to an action that has not occurred at any point in the speaker's life.
Nikada nisam bio u Francuskoj.
I have never been to France.
Here, 'nikada' implies a future state or possibility where the action 'learn' would not happen.
Ako ne paziš, nikada nećeš naučiti.
If you don't pay attention, you will never learn.
'Nikada' in this context denotes the absence of the experience 'seeing snow' at any past time for the subject.