This is the 343rd most frequent Italian word.
inizio
"Beginning" or "start."
Here, 'inizio' is used in its nominal form to indicate a temporal beginning or start.
All'inizio del film, c'era un prologo molto interessante.
At the beginning of the movie, there was a very interesting prologue.
In this sentence, 'inizio' is a verb form (iniziare), indicating the action of starting.
Iniziamo il progetto domani mattina.
We start the project tomorrow morning.
Again as a noun, 'inizio' represents the starting point of a period of time, specifically the season of spring.