tra

In a sentence

• Tra le montagne c'è un piccolo villaggio.

  Between the mountains, there is a small village.

  Here, 'tra' is used to indicate a physical location between two distinct objects (the mountains).

• Tra pochi giorni partirò per un viaggio.

  In a few days, I will leave for a trip.

  In this case, 'tra' expresses a time frame after which something will occur (a few days from now).

• C'è un accordo tra di noi.

  There is an agreement between us.

  Here, 'tra' signifies a relationship or connection among people (between us).