0 with each other -- insieme
They live together. Abitano insieme.
1 at the same time -- allo stesso tempo, contemporaneamente
2 in the same place or close to each other -- insieme
We all sat together. Eravamo tutti seduti insieme.
3 with someone or something else; in company -- insieme
They travelled together.
4 at the same time -- insieme
They all arrived together.
5 so as to be joined or united -- insieme
He nailed/fitted/stuck the pieces of wood together.