This is the 564th most frequent Italian word.
passa
"Passa" means "passes" or "goes" (third-person singular form of "passare").
In this sentence, 'passa' is the imperative form of the verb 'passare', used to request the action of passing the item.
Passa il sale, per favore.
Pass the salt, please.
Here, 'passa' is the third person singular present indicative form of 'passare', meaning 'to pass' in the context of time.
Il tempo passa velocemente.
Time passes quickly.
In this context, 'passa' is the third person singular present tense of 'passare', meaning 'to pass by' or 'to go past' something.