This is the 220th most frequent Italian word.
all
The Italian word "all" does not exist. You may mean "al," which means "to the" (a + il).
Here 'tutti' means 'all' referring to a group of people, indicating completeness without exceptions.
Tutti gli studenti sono presenti.
All students are present.
'Tutta' refers to an entire object, the cake, emphasizing the consumption of the entirety.
Abbiamo mangiato tutta la torta.
We ate all the cake.
'Alle' is derived from 'a le' (to the), used to denote time, emphasizing a specific point in time.