This is the 344th most frequent Italian word.
lavorare
To work.
In this example, 'lavorato' is the past participle of 'lavorare', used in a passato prossimo construction to indicate a completed past action.
Hai mai lavorato in un ristorante?
Have you ever worked in a restaurant?
In this sentence, 'lavoro' is the first-person singular present tense form of the verb 'lavorare', meaning 'to work'.
Io lavoro ogni giorno in ufficio.
I work every day in the office.
Here, 'lavorare' is in its infinitive form, used after the verb 'spero di' to indicate a desired or planned action.