parola

1. slogan; motto
   Demonstranti su nosili transparente sa parolama. — The protesters carried banners with slogans.
   To su samo prazne parole pred izbore. — Those are just empty slogans before the elections.
2. (military, with sentries) password
   Stražar je tražio parolu od svakog vojnika. — The guard asked every soldier for the password.

A computer or account password is usually lozinka, not parola.